< Flora of New York

Ericales
Flora of New York Gentianales
Solanales
Table of
contents
Genus
index
Protected species index Invasive species index

Order Garryales

The order Garryales...[1]

Family Eucommiaceae

The Eucommiaceae (hard rubber tree family) contains a single living species.[1]
  1. Eucommiaceae Troy Weldy & David Werier (2013) New York Flora Atlas. New York Flora Association, Albany, New York.

Eucommia

Although a number of extinct Eucommia species were native to North America, the only living species, Eucommia ulmoides, is native to central China but has been planted worldwide. It is known for being a very cold-tolerant rubber-producing tree. It has been reported as naturalized in Indiana and Ohio, but not in New York State.[1]
Garryales — Eucommiaceae — Eucommia
Eucommia hard rubber tree N.Y. Status Images Distribution NY NPT

1890. Eucommia ulmoidesOliv.
Hardy rubber tree
Hard rubber tree
Chinese rubber tree
Gutta-percha tree

Introduced,
Not naturalized

Deciduous,
Tree
NYFA-Xm



BNA

Red 
Images, wsp

    Order Gentianales

    The order Gentianales...[1]
    Order Family Subfamily Tribe Subtribe Genera G T
    Gentianales Rubiaceae Cinchonoideae Naucleeae Cephalanthus (button bush) 1 1
    Rubioideae Morindeae Mitchella (partridge berry) 1 1
    Spermacoceae Diodia (buttonweed)
    Houstonia (bluet)
    Oldenlandia (clustered bluets)
    3 6
    Rubieae Rubia (madder)
    Sherardia (field-madder)
    Asperula (woodruff)
    Cruciata (bedstraw)
    Galium (bedstraw, wild-licorice, cleavers)
    5 29
    Loganiaceae Spigelia (Indian pink, pinkroot) 1 1
    Gentianaceae Chironieae Centaurium (centaury)
    Sabatia (rose gentian, pink)
    2 6
    Gentianeae Gentianinae Gentiana (gentian) 1 5
    Swertiinae Bartonia (screwstem)
    Frasera (green-gentian)
    Gentianella (dwarf gentian)
    Gentianopsis (fringed-gentian)
    Halenia (spurred-gentian)
    5 7
    Apocynaceae Rauvolfioideae Vinceae Vincinae Vinca (periwinkle) 1 2
    Amsonieae Amsonia (bluestar) 1 3
    Apocynoideae Apocyneae Apocynum (dogbane) 1 3
    Periplocoideae Periploca (silk vine) 1 1
    Asclepiadoideae Asclepiadeae Asclepiadinae Asclepias (milkweed) 1 12
    Cynanchinae Cynanchum (honeyvine) 1 1
    Tylophorinae Vincetoxicum (swallow-wort) 1 3

    Family Rubiaceae

    The Rubiaceae (coffee or madder family).[1][2]
    1. Rubiaceae Troy Weldy & David Werier (2013) New York Flora Atlas. New York Flora Association, Albany, New York.
    2. Rubiaceae USDA Natural Resources Conservation Service (NRCS) PLANTS Database (2013).

    Subfamily Cinchonoideae

    Tribe Naucleeae

    Cephalanthus
    Cephalanthus occidentalis
    buttonbush

      Gentianales — Rubiaceae — Cinchonoideae — Naucleeae — Cephalanthus
      Cephalanthus Buttonbush N.Y. Status Images Distribution NY NPT
      L.

      1753. Cephalanthus occidentalisL.
      1828. C. occidentalis var. pubescens
      1849. C. occidentalis var. californicus
      1917. C. berlandieriWernham
      Buttonbush,
      Common buttonbush,
      Eastern buttonbush,
      Button willow,
      Honey bells
      Céphalanthe occidental,
      Céphalante occidental,
      Bois-bouton,
      Bois-noir
      Native, C:7,
      Secure

      OBL

      Perennial,
      Tree, shrub,
      Sun - part shade
      NYFA-5
      USDA-NN
      NPT Can
      ARS ITIS
      Trop.

      LBJ

      Images, wsp

        Subfamily Rubioideae

        Tribe Morindeae

        Mitchella
        Mitchella repens L.
        partridgeberry
        Mitchella consists of just two species, one from eastern Asia and the other, Mitchella repens (partridgeberry), is native to eastern North America.
          Gentianales — Rubiaceae — Rubioideae — Morindeae — Mitchella
          Mitchella Mitchella N.Y. Status Images Distribution NY NPT
          L.

          1753. Mitchella repensL.
          1862. Perdicesca repens(L.) Prov.
          Partridgeberry,
          Partridge-berry,
          Two-eyed berry,
          Twinberry,
          Squaw vine
          Pain-de-perdrix
          Native, C:6,
          Secure

          FACU

          Perennial,
          Herb-forb,
          Part shade - shade
          NYFA-5
          USDA-NN
          NPT 
          ARS 
          Trop.
          BNA
          LBJ

          Images, wsp

            Tribe Spermacoceae

            Diodia
            Gentianales — Rubiaceae — Rubioideae — Spermacoceae — Diodia
            Diodia Buttonweed N.Y. Status Images Distribution NY NPT
            Walter

            1788. Diodia teresWalter
            1913. Diodella teres(Walter) Small
            2014. Hexasepalum teres
            (Walter) J.H.Kirkbr.
            Rough buttonweed,
            Buttonweed,
            Poorjoe
            Native, C:0,
            Secure

            FACU-UPL

            Annual,
            Herb-forb
            NYFA-5
            USDA-N0
            NPT 
            ARS 


            LBJ

            Images, wsp
              Houstonia
              Houstonia caerulea
              bluets
              The genus Houstonia contains about 20 species, generally known as Bluets. All are North American natives. Three are considered to be native to New York State.
                Gentianales — Rubiaceae — Rubioideae — Spermacoceae — Houstonia
                Houstonia Bluet N.Y. Status Images Distribution NY NPT
                L.

                1753. Houstonia caeruleaL.
                1833. Hedyotis caerulea(L.) Hook.
                1834. Anotis coerulea(L.) G.Don
                1856. Oldenlandia caerulea(L.) A.Gray
                1907. Houstonia caerulea var. faxonorum
                Common bluets
                Quaker ladies
                Little bluet
                Azure bluet
                Bluets
                Native, C:1,
                Secure

                FACU

                Perennial,
                Herb-forb
                NYFA-5
                USDA-NN

                ARS ITIS
                Trop.



                Images, wsp
                Gaertn.

                Long-leaved bluets
                Longleaf summer bluet

                Houstonie à longues feuilles
                Native, C:8,
                Secure



                Perennial,
                Herb-forb
                NYFA-5
                USDA-NN

                ITIS




                Images, wsp
                L.
                var. calycosaA.Gray

                1813. Hedyotis lanceolataPoir.
                1830. Anotis lanceolata(Poir.) DC.
                1884. Houstonia purpurea var. calycosa
                1901. Houstonia calycosa(A. Gray) C. Mohr
                1901. Houstonia lanceolata(Poir.) Britton
                1954. Hedyotis purpurea var. calycosa
                Midwestern purple bluet,
                Purple bluet,
                Venus' pride
                Native,
                Endangered
                NYFA-Z1
                USDA-N0

                ITIS
                Trop.



                Images, wsp
                L.
                var. purpurea

                Hedyotis purpurea
                Purple bluet Native,
                Endangered
                NYFA-Z






                Images, wsp
                Willd. ex Roem. & Schult.

                1818. Houstonia canadensis
                Willd. ex Roem. & Schult.
                1941. Hedyotis canadensis
                (Willd. ex Roem. & Schult.) Fosberg
                Canada bluets
                Canadian summer bluet

                Native, C:7,
                Unranked

                Perennial,
                Herb-forb
                NYFA-U
                USDA-N0


                Trop.



                Images, wsp
                  Oldenlandia
                  Gentianales — Rubiaceae — Rubioideae — Spermacoceae — Oldenlandia
                  Oldenlandia Oldenlandia N.Y. Status Images Distribution NY NPT
                  L.

                  Clustered bluets,
                  Clustered mille graines
                  Native,
                  Endangered
                  NYFA-1
                  USDA-N0






                  Images, wsp

                    Tribe Rubieae

                    Galium
                    There are about 24 species of Galium or bedstraw in New York State.[1][2]
                    Galium sect. Platygalium
                    Gentianales — Rubiaceae — Rubioideae — Rubieae — Galium sect. Platygalium
                    Galiumsect. Platygalium Bedstraw N.Y. Status Images Distribution NY NPT
                    L.

                    1753. Galium borealeL.
                    1800. G. hyssopifoliumHoffm.
                    1818. G. septentrionaleRoem.& Schult.
                    1819. G. strictumTorr.
                    1830. G. boreale var. hyssopifolium
                    1830. G. boreale var. intermedium
                    Northern bedstraw,
                    Boreal bedstraw,
                    Crosswort
                    Gaillet boréal
                    Native, C:6,
                    Secure
                    NYFA-5
                    USDA-NN
                    NPT Can
                    ARS ITIS
                    Trop.
                    NSE BNA
                    IPN 

                    Images, wsp
                    (Torr.) Torr.

                    1819. G. circaezans var. lanceolatum
                    1824. G. lanceolatum(Torr.) Torr.
                    Lanceleaf wild licorice,
                    Lanceleaf licorice bedstraw,
                    Torrey's wild licorice,
                    Spear wild licorice
                    Gaillet lancéolé
                    Native, C:7,
                    Secure
                    NYFA-5
                    USDA-NN
                    NPT Can
                    ITIS
                    Trop.
                    NSE BNA


                    Images, wsp
                    Michx.
                    var. circaezans

                    G. bermudense
                    G. circaeoides
                    G. rotundifolium var. circaezans
                    Licorice bedstraw,
                    Wild licorice
                    Native, C:7,
                    Secure
                    NYFA-5
                    USDA-
                    NPT 


                    NSE BNA


                    Images, wsp
                    Note: IWF
                    Michx.
                    var. hypomalacum

                    Licorice bedstraw,
                    Forest bedstraw,
                    Wild licorice
                    Native, C:7,
                    Vulnerable
                    NYFA-3
                    USDA-
                    NPT 


                    NSE BNA


                    Images, wsp
                    Aiton
                    ssp. pilosum

                    Hairy bedstraw Native, C:6,
                    Likely secure
                    NYFA-4
                    USDA-NN
                    NPT 


                    NSE BNA


                    Images, wsp
                    Aiton
                    ssp. puncticulosum
                    (Michx.) Torr. & A.Gray

                    1788. Galium purpureumWalter
                    1791. Galium walteriJ.F.Gmel.
                    1803. Galium puncticulosumMichx.
                    1805. Galium punctatumPers.
                    1841. Galium pilosum
                    var. puncticulosumTorr.& A.Gray
                    Hairy bedstraw Native,
                    No records
                    NYFA-D
                    USDA-N0
                    NPT 

                    Trop.
                    NSE BNA


                    Images, wsp
                    Steller ex Schult. & Schult.f

                    Boreal bedstraw Native, C:10?,
                    Endangered
                    NYFA-1
                    USDA-NN
                    NPT 


                    NSE BNA


                    Images, wsp
                    Torrey & A.Gray

                    Shining bedstraw Native, C:10?,
                    Endangered,
                    NYNHP: 1[1]
                    NYFA-1
                    USDA-NN
                    NEW-0


                    NSE BNA


                    Images, wsp
                    Galium sect. Aparinoides
                    Gentianales — Rubiaceae — Rubioideae — Rubieae — Galium sect. Aparinoides
                    Galiumsect. Aparinoides Bedstraw N.Y. Status Images Distribution NY NPT
                    Michx.

                    Rough bedstraw,
                    Kidney-vine,
                    Pointed cleavers
                    Native, C:6,
                    Secure
                    NYFA-5
                    USDA-NN
                    NPT 


                    NSE BNA


                    Images, wsp
                    L.

                    Common marsh bedstraw,
                    Marsh bedstraw
                    Native, C:3,
                    Secure
                    NYFA-5
                    USDA-NN
                    NPT 


                    NSE BNA


                    Images, wsp
                    L.

                    Stiff marsh bedstraw,
                    Stiff three-petal bedstraw
                    Native, C:5,
                    Secure
                    NYFA-5
                    USDA-NN
                    NPT 


                    NSE BNA


                    Images, wsp
                    L.
                    ssp. trifidum

                    G. brandegeeiA.Gray p.p.
                    Three-petal bedstraw Native, C:7,
                    Secure
                    NYFA-5
                    USDA-NN
                    NPT 


                    NSE BNA


                    Images, wsp
                    Bigelow 1824
                    ssp. obtusum

                    G. trifidum var. latifoliumTorr.
                    G. obtusum var. ramosumGleason
                    Bluntleaf bedstraw,
                    Blunt-leaved bedstraw
                    Native, C:7,
                    Secure
                    NYFA-5
                    USDA-NN
                    NPT 
                    ITIS

                    NSE BNA


                    Images, wsp
                    (Wieg.) Wieg.

                    G. tinctorium var. labradoricum
                    Bog bedstraw,
                    Northern bog bedstraw
                    Native, C:8,
                    Likely secure
                    NYFA-4
                    USDA-NN
                    NPT 


                    NSE BNA


                    Images, wsp
                    Fernald & Wiegand

                    G. trifidum ssp. brevipes
                    Limestone swamp bedstraw Native, C:10?,
                    Likely extirpated
                    NYFA-Z
                    USDA-NN
                    NPT 


                    NSE BNA


                    Images, wsp
                      Galium sect. Kolgyda
                      Note that BONAP lists most Galium species, including Galium aparine as noxious weeds in New York, Pennsylvania and New England. This is likely based on prohibited-seed lists that don't distinguish between Galium species.
                        Gentianales — Rubiaceae — Rubioideae — Rubieae — Galium sect. Kolgyda
                        Galiumsect. Kolgyda Bedstraw N.Y. Status Images Distribution NY NPT
                        L. 1753

                        Cleavers,
                        Catchweed bedstraw,
                        Stickywilly,
                        Scratch bedstraw
                        Native, C:0,
                        Secure
                        NYFA-5
                        USDA-NX?
                        NPT 
                        ARS 

                        NSE BNA


                        Images, wsp
                        Dandy

                        Galium tricorne Stokes p.p.
                        Rough-fruited corn bedstraw,
                        Roughfruit corn bedstraw
                        Introduced
                        NYFA-X
                        USDA-XX



                        NSE BNA


                        Images, wsp
                          Galium sect. Hylaea
                          Galium triflorum Michx.
                          three-flowered bedstraw
                          Note that BONAP lists most Galium species, including Galium triflorum as noxious weeds in New York, Pennsylvania and New England. This is likely based on prohibited-seed lists that don't distinguish between Galium species.
                            Gentianales — Rubiaceae — Rubioideae — Rubieae — Galium sect. Hylaea
                            Galiumsect. Hylaea Bedstraw N.Y. Status Images Distribution NY NPT
                            Michx.

                            1803. Galium triflorumMichx.
                            1803. Galium jalapenseSchltdl.
                            1935. Galium triflorum
                            var. asprelliformeFernald
                            Sweet-scented bedstraw,
                            Three-flowered bedstraw,
                            Fragrant bedstraw
                            Gaillet à trois fleurs,
                            Gaillet odorant
                            Native, C:7,
                            Secure

                            FACU

                            Perennial,
                            Herb-vine
                            NYFA-5
                            USDA-NN
                            NPT 
                            ARS 
                            Trop.
                            NSE BNA


                            Images, wsp
                            (L.) Scop.

                            Asperula odorata
                            Sweet bedstraw,
                            Sweetscented bedstraw,
                            Sweet woodruff
                            Introduced from
                            temperate Eurasia,
                            Somewhat invasive,
                            NYIS: 48%[1]
                            NYFA-X
                            USDA-XX
                            NPT 
                            ARS 

                            NSE BNA


                            Images, wsp
                            Galium sect. Leiogalium
                            Galium album Mill.
                            hedge bedstraw
                            Although most sources show the hedge bedstraw species Galium mollugo as being widepread in the Northeast and the similar Galium album being less common, if not rare,[1] the New York Flora Atlas now excludes Galium mollugo from New York State and shows Galium album as common, having moved its Galium mollugo records to Galium album. Other sources, such as VASCAN[2] show G. album as a synonym of G. molluglo. See D. Mersereau and A. DiTommaso (2001).[3]
                            Gentianales — Rubiaceae — Rubioideae — Rubieae — Galium sect. Leiogalium
                            Galiumsect. Leiogalium Bedstraw N.Y. Status Images Distribution NY NPT
                            Mill.

                            1753. Galium mollugoL. misapplied
                            1762. Galium erectumHuds.
                            1768. Galium albumMill.
                            Galium mollugo ssp. erectum
                            1926. Galium mollugo var. erectum
                            Galium album var. erectum
                            Hedge bedstraw
                            White bedstraw
                            False baby's breath
                            Whorled bedstraw
                            Wild madder

                            Gaillet mollugine,
                            Caille-lait blanc
                            Introduced from
                            Eurasia,
                            northern Africa,
                            Potentially invasive,
                            IO,
                            NE-3[1]
                            NYFA-X
                            USDA-XX
                            NPT Can
                            ARS ITIS
                            Trop.
                            BNA
                            IPN 

                            Images, wsp
                            L.

                            1762. Galium sylvaticumL.
                            Scotch-mist,
                            Wood bedstraw,
                            Baby's breath
                            Gaillet des bois,
                            Gaillet des forêts
                            Introduced
                            NYFA-X
                            USDA-XX
                            NPT Can
                            ITIS
                            Trop.
                            BNA


                            Images, wsp
                            Galium(excluded taxa) Bedstraw N.Y. Status Images Distribution NY NPT
                            L.

                            1753. Galium mollugoL.
                            1880. Rubia mollugo(L.) Baill.
                            False baby's breath
                            Smooth bedstraw

                            Introduced,
                            N.Y. excluded
                            NYFA-XCLD
                            USDA-XX
                            NPT Can
                            ARS ITIS
                            Trop.
                            BNA
                            IPN 

                            Images, wsp
                            L.

                            1762. Galium aristatumL.
                            Awned bedstraw Introduced from
                            Eurasia,
                            northern Africa,
                            N.Y. excluded
                            NYFA-XCLD
                            USDA-
                            NEW-0
                            ITIS

                            BNA
                            IPN 

                            Images, wsp
                            1. Category 3 Plants - widespread non-native species - Eastern Region invasive plants, ranked by degree of invasiveness as based on information from States (1998) US Forest Service
                            Galium sect. Galium
                            Gentianales — Rubiaceae — Rubioideae — Rubieae — Galium sect. Galium
                            Galiumsect. Galium Bedstraw N.Y. Status Images Distribution NY NPT
                            L.
                            ssp. verum

                            1753. Galium verumL.
                            1879. G. verum var. verum
                            1885. G. verum ssp. verum
                            Lady's bedstraw,
                            Yellow bedstraw,
                            Yellow Spring bedstraw
                            Introduced from
                            Eurasia,
                            northern Africa
                            NYFA-X
                            USDA-XX
                            NPT 

                            Trop.



                            Images, wsp
                            L.
                            ssp. wirtgenii(F.W. Schultz) Oborný

                            1854. Galium wirtgeniiF.W.Schultz
                            1879. G. verum var. wirtgenii
                            1885. G. verum ssp. wirtgenii
                            Wirtgen's bedstraw Introduced
                            NYFA-X
                            USDA-XX
                            NPT 

                            Trop.



                            Images, wsp
                            Retz.

                            Galium mollugo ×
                            Galium verum

                            1795. Galium × pomeranicumRetz.
                            1804. Galium × ochroleucum
                            Wolf ex Schweigg.
                            1850. Galium × ambiguumGren. & Godr.
                            1903. G. × ochroleucum var. ambiguum
                            Pale yellow bedstraw Introduced,
                            N. America native
                            NYFA-X
                            USDA-XN


                            Trop.



                            Images, wsp
                              Galium sect. Asperula
                              Gentianales — Rubiaceae — Rubioideae — Rubieae — Asperula
                              Galiumsect. Asperula Woodruff N.Y. Status Images Distribution n NPT
                              (L.) F. Herm.

                              1753. Asperula arvensisL.
                              1844. Asperula setosaJaub. & Spach
                              1904. G. sherardiiflorum(L.) E.H.L.Krause
                              1844. Asperula arvensis var. setosa
                              1956. G. arvense(L.) F. Herm.
                              Blue woodruff Introduced
                              NYFA-X
                              USDA-XW

                              ITIS
                              Trop.
                              BNA


                              Images, wsp
                                Galium sect. Cruciata
                                Gentianales — Rubiaceae — Rubioideae — Rubieae — Cruciata
                                Galiumsect. Cruciata Bedstraw N.Y. Status Images Distribution n NPT
                                (Bellardi) Ehrend.

                                1789. Galium pedemontanum(Bellardi) All.
                                1788. Vaillantia pedemontanaBellardi
                                1961. Cruciata pedemontana(Bellardi) Ehrend.
                                Piedmont bedstraw,
                                Yellow bedstraw,
                                Piedmont Crosswort
                                Introduced
                                NYFA-X
                                USDA-


                                Trop.



                                Images, wsp
                                Opiz

                                1771. Galium cruciata(L.) Scop.
                                1852. Cruciata laevipesOpiz
                                1958. Cruciata chersonensisEhrend.
                                Smooth bedstraw Introduced
                                NYFA-X
                                USDA-X0


                                Trop.



                                Images, wsp
                                  Sherardia
                                  Gentianales — Rubiaceae — Rubioideae — Rubieae — Sherardia
                                  Sherardia Field madder N.Y. Status Images Distribution NY NPT
                                  L.

                                  Blue field madder,
                                  Blue fieldmadder,
                                  Cultivated field madder
                                  Introduced
                                  NYFA-X
                                  USDA-XX






                                  Images, wsp
                                    Rubia
                                    Gentianales — Rubiaceae — Rubioideae — Rubieae — Rubia
                                    Rubia Rubia N.Y. Status Images Distribution NY NPT
                                    L.

                                    Rubia tinctoria L. orth. var.
                                    Dyer's madder,
                                    Indian madder,
                                    Madder
                                    Introduced,
                                    Impersistent
                                    NYFA-Xm
                                    USDA-X0






                                    Images, wsp

                                      Family Loganiaceae

                                      The Loganiaceae is a mostly-tropical family with no members that are native to or reported to have naturalized in New York.

                                      Spigelia

                                      Spigelia marilandica (L.) L.
                                      Indian pink
                                      Spigelia marilandica, a native of the southeastern U.S., has been propagated in New York and sold in the "native" plant trade. According to the Agriculture Research Service, it is only considered native as far north as southern Indiana and Maryland.
                                        Gentianales — Loganiaceae — Spigelia
                                        Spigelia Pinkroot N.Y. Status Images Distribution NY NPT
                                        (L.) L.

                                        1753. Lonicera marilandicaL.
                                        1767. Spigelia marilandica(L.) L.
                                        Indian pink,
                                        Woodland pinkroot
                                        N. America native
                                        southern US,
                                        No specimens,
                                        Cultivated

                                        Perennial,
                                        Forb-herb
                                        NYFA-0
                                        USDA-N0

                                        ARS 

                                        NSE BNA


                                        Images, wsp

                                          Family Gentianaceae

                                          The Gentianaceae (gentian family).[1][2]

                                          Tribe Chironieae

                                          Centaurium

                                          Centaurium erythraea
                                          common centaury

                                          1. Gentianaceae Troy Weldy & David Werier (2013) New York Flora Atlas. New York Flora Association, Albany, New York.
                                          2. Gentianaceae USDA Natural Resources Conservation Service (NRCS) PLANTS Database (2013).
                                          Gentianales — Gentianaceae — Chironieae — Centaurium
                                          Centaurium Centaury N.Y. Status Images Distribution NY NPT
                                          Rafn

                                          1782. Centaurium umbellatumGilib. inval.
                                          1800. Centaurium erythraeaRafn
                                           auct. Centaurium minusnon Moench, rej.
                                           auct. Erythraea centaurium
                                          Common centaury,
                                          European centaury
                                          Introduced

                                          FAC
                                          NYFA-X
                                          USDA-XX
                                          NPT 





                                          Images, wsp
                                          (Sw.) Druce

                                          Branched centaury,
                                          Branching centaury-plant,
                                          Lesser centaury
                                          Introduced

                                          FAC
                                          NYFA-X
                                          USDA-XX
                                          NPT 





                                          Images, wsp

                                            Sabatia

                                            Gentianales — Gentianaceae — Chironieae — Sabatia
                                            Sabatia Rose-gentian N.Y. Status Images Distribution NY NPT
                                            Pursh

                                            S. maculata(Benth.) Benth. & Hook.f.
                                            S. palmeriA.Gray
                                            S. purpusiiBrandegee
                                            S. simulataBritton
                                            Sea pink,
                                            Marsh pink,
                                            Rose of Plymouth,
                                            Saltmarsh rosegentian
                                            Native,
                                            Threatened,
                                            NYNHP: 2[1]
                                            NYFA-2
                                            USDA-N0






                                            Images, wsp
                                            (L.) Pursh

                                            1753. Chironia angularisL.
                                            1814. Sabatia angularis(L.) Pursh
                                            Square-stemmed rose pink,
                                            Rose pink,
                                            Bitterbloom
                                            Native,
                                            Endangered,
                                            NYNHP: 1[2]
                                            NYFA-1
                                            USDA-NN






                                            Images, wsp
                                            (L.) Torr.

                                            Sabatia gracilis(Michx.) Salisb.
                                            Slender marsh pink,
                                            Slender rose gentian
                                            Native,
                                            Endangered,
                                            NYNHP: 1[3]
                                            NYFA-1
                                            USDA-N0






                                            Images, wsp
                                            (L.) BSP.
                                            var. dodecandra

                                            Chironia dodecandraL.
                                            Sabatia chloroides(Michx.) Pursh
                                            Large marsh pink,
                                            Marsh rose gentian
                                            Native,
                                            Extirpated
                                            NYFA-Z
                                            USDA-N0






                                            Images, wsp

                                            Tribe Gentianeae

                                            Subtribe Gentianinae

                                            Gentiana
                                            Gentianales — Gentianaceae — Gentianeae — Gentiana
                                            Gentiana Gentian N.Y. Status Images Distribution NY NPT
                                            Griseb.

                                            Fringe-topped bottle gentian Native,
                                            Likely secure
                                            NYFA-4
                                            USDA-NN
                                            NPT 



                                            LBJ

                                            Images, wsp
                                            Raf.

                                            Bottle gentian,
                                            Closed gentian
                                            Native,
                                            Likely secure
                                            NYFA-4
                                            USDA-NN
                                            NPT 



                                            LBJ

                                            Images, wsp
                                            Froel.

                                            Narrow-leaved gentian Native,
                                            Vulnerable
                                            NYFA-3-4
                                            USDA-NN
                                            NPT 



                                            LBJ

                                            Images, wsp
                                            L.

                                            Soapwort gentian,
                                            Soap gentian,
                                            Harvestbells
                                            Native,
                                            Endangered
                                            NYFA-1
                                            USDA-N0
                                            NPT 



                                            LBJ

                                            Images, wsp
                                            Pringle

                                            Downy gentian Native,
                                            Likely extirpated
                                            NYFA-Z
                                            USDA-NN
                                            NPT 



                                            LBJ

                                            Images, wsp

                                              Subtribe Swertiinae

                                              Bartonia
                                              Gentianales — Gentianaceae — Gentianeae — Swertiinae — Bartonia
                                              Bartonia Screwstem N.Y. Status Images Distribution NY NPT
                                              (L.) Britton, Sterns & Poggenb.

                                              1753. Sagina virginicaL.
                                              1801. Bartonia tenellaWilld.
                                              1888. Bartonia virginica(L.) BSP
                                              1895. Bartonia moseriB.L.Rob.
                                              Yellow screwstem,
                                              Virginia screwstem,
                                              Yellow bartonia
                                              Bartonie de Virginie
                                              Native,
                                              Likely secure
                                              NYFA-4
                                              USDA-NN
                                              NPT Can

                                              Trop.

                                              IPN 

                                              Images, wsp
                                              ssp. paniculata

                                              Twining screwstem Native,
                                              Endangered
                                              NYFA-1






                                              Images, wsp
                                                Frasera
                                                Gentianales — Gentianaceae — Gentianeae — Swertiinae — Frasera
                                                Frasera Green-gentian N.Y. Status Images Distribution NY NPT

                                                Frasera officinalis
                                                Frasera verticillata
                                                Frasera walteri
                                                Swertia caroliniensis
                                                Columbo
                                                American columbo
                                                Green gentian
                                                Yellow gentian
                                                Carolina gentian
                                                Native,
                                                Threatened
                                                NYFA-2
                                                USDA-NN






                                                Images, wsp
                                                  Gentianella
                                                  Gentianales — Gentianaceae — Gentianeae — Swertiinae — Gentianella
                                                  Gentianella Dwarf-gentian N.Y. Status Images Distribution NY NPT
                                                  (L.) Small
                                                  ssp. quinquefolia

                                                  Agueweed,
                                                  Gall-of-the-earth,
                                                  Stiff gentian
                                                  Native,
                                                  Likely secure
                                                  NYFA-4
                                                  USDA-NN
                                                  NPT 



                                                  LBJ

                                                  Images, wsp
                                                    Gentianopsis
                                                    Gentianales — Gentianaceae — Gentianeae — Swertiinae — Gentianopsis
                                                    Gentianopsis Fringed-gentian N.Y. Status Images Distribution NY NPT
                                                    (Froel.) Ma

                                                    Greater fringed gentian Native,
                                                    Likely secure
                                                    NYFA-4
                                                    USDA-NN
                                                    NPT 



                                                    LBJ

                                                    Images, wsp
                                                    (Raf.) Holub

                                                    Lesser fringed gentian Native,
                                                    Endangered
                                                    NYFA-1
                                                    USDA-NN
                                                    NPT 



                                                    LBJ

                                                    Images, wsp
                                                      Halenia
                                                      Gentianales — Gentianaceae — Gentianeae — Swertiinae — Halenia
                                                      Halenia Spurred-gentian N.Y. Status Images Distribution NY NPT
                                                      (Sm.) Griseb.

                                                      Spurred gentian Native,
                                                      Endangered
                                                      NYFA-1
                                                      USDA-NN






                                                      Images, wsp

                                                        Family Apocynaceae

                                                        The Apocynaceae (dogbane or periwinkle family).[1][2][3]

                                                        Subfamily Rauvolfioideae

                                                        Tribe Vinceae

                                                        A very common New York ground cover, both cultivated and naturalized is Vinca minor, known commonly as periwinkle or myrtle. It is often found in wooded areas were old homesteads once stood and along ditches and stream banks where floodwaters have carried the rhizomes downstream from their previous location.
                                                          Subtribe Vincinae
                                                          Vinca
                                                          While Vinca minor is very common outside of cultivation and is considered to be moderately invasive, Vinca major rarely naturalizes in New York State.
                                                            Gentianales — Apocynaceae — Rauvolfioideae — Vinceae — Vinca
                                                            Vinca Periwinkle N.Y. Status Images Distribution NY NPT
                                                            L.

                                                            1753. Vinca minorL.
                                                            Lesser periwinkle,
                                                            Common periwinkle,
                                                            Myrtle,
                                                            Running-myrtle
                                                            Petite pervenche,
                                                            Pervenche mineure
                                                            Introduced from
                                                            Eurasia,
                                                            Moderately invasive,
                                                            NYIS: 57%[1],
                                                            CP-3[2]
                                                            NYFA-X
                                                            USDA-XX
                                                            NPT Can
                                                            ARS 




                                                            Images, wsp
                                                            L.

                                                            1753. Vinca majorL.
                                                            Greater periwinkle,
                                                            Bigleaf periwinkle,
                                                            Large-leaved periwinkle
                                                            Grande pervenche
                                                            Introduced from
                                                            Eurasia,
                                                            Rarely naturalizing
                                                            NYFA-X
                                                            USDA-
                                                            NPT Can
                                                            ARS 
                                                            Trop.



                                                            Images, wsp

                                                            Tribe Amsonieae

                                                            Amsonia
                                                            Gentianales — Apocynaceae — Rauvolfioideae — Vinceae — Amsonia
                                                            Amsonia Bluestar N.Y. Status Images Distribution NY NPT
                                                            Walter
                                                            var. tabernaemontana

                                                            1762. Tabernaemontana amsoniaL.
                                                            1788. Amsonia tabernaemontanaWalter
                                                            1894. Amsonia amsonia(L.) Britton
                                                            Eastern bluestar,
                                                            Texas-star
                                                            Introduced from
                                                            southern US,
                                                            N. America native
                                                            NYFA-X
                                                            USDA-N0
                                                            NPT 
                                                            ARS 
                                                            Trop.
                                                            NSE BNA


                                                            Images, wsp
                                                            Walter
                                                            var. salicifolia(Pursh) Woodson

                                                            1814. Amsonia salicifoliaPursh
                                                            1838. Ansonia salicifolia(Pursh) Raf.
                                                            1928. A. tabernaemontana var. salicifolia
                                                            (Pursh) Woodson
                                                            Eastern bluestar,
                                                            Willowleaf Bluestar
                                                            Introduced from
                                                            southern US,
                                                            N. America native
                                                            NYFA-X
                                                            USDA-N0
                                                            NPT 
                                                            ARS 
                                                            Trop.
                                                            NSE BNA


                                                            Images, wsp
                                                            Woodson

                                                            Bluestar,
                                                            Ozark bluestar
                                                            Introduced,
                                                            N. America native
                                                            NYFA-X
                                                            USDA-N0






                                                            Images, wsp

                                                              Subfamily Apocynoideae

                                                              Tribe Apocyneae

                                                              Apocynum
                                                              Apocynum cannabinum
                                                              hemp dogbane
                                                              Apocynum, or dogbane, is generally considered to be a weedy native genus.
                                                                Gentianales — Apocynaceae — Apocynoideae — Apocyneae — Apocynum
                                                                Apocynum Dogbane N.Y. Status Images Distribution NY NPT
                                                                L.

                                                                1753. Apocynum cannabinumL.
                                                                1770. Apocynum sibiricumJacq.
                                                                1789. Apocynum hypericifoliumAiton
                                                                1902. Apocynum suksdorfiiGreene
                                                                1912. Apocynum ithacenseGreene
                                                                Hemp dogbane,
                                                                Clasping-leaved dogbane,
                                                                Indian hemp,
                                                                American-hemp
                                                                Apocyn chanvrin,
                                                                Apocyn à feuilles
                                                                de millepertuis
                                                                Native, C:2,
                                                                Secure
                                                                NYFA-5
                                                                USDA-N
                                                                NPT Can
                                                                ARS 
                                                                Trop.
                                                                BNA


                                                                Images, wsp

                                                                1753. Apocynum androsaemifoliumL.
                                                                1894. Apocynum pumilum(A.Gray) Greene
                                                                1901. Apocynum ambigensGreene
                                                                1906. Apocynum scopulorumGreene
                                                                Spreading dogbane,
                                                                Bitter-root,
                                                                Common dogbane,
                                                                Creeping dogbane
                                                                Apocyn à feuilles
                                                                d'androsème,
                                                                Herbe à la puce
                                                                Native, C:2,
                                                                Secure
                                                                NYFA-5
                                                                USDA-NN
                                                                NPT Can
                                                                ARS 
                                                                Trop.
                                                                BNA


                                                                Images, wsp
                                                                Greene (pro sp.)

                                                                Apocynum androsaemifolium ×
                                                                Apocynum cannabinum

                                                                1893. Apocynum × floribundumGreene
                                                                1897. Apocynum × mediumGreene
                                                                1901. Apocynum × milleriBritton
                                                                1930. Apocynum × jonesiiWoodson
                                                                Intermediate dogbane,
                                                                Jones' dogbane,
                                                                Hybrid of
                                                                hemp dogbane &
                                                                spreading dogbane
                                                                Apocyn moyen
                                                                Native, C:x,
                                                                Secure
                                                                NYFA-4
                                                                USDA-N
                                                                Can

                                                                Trop.



                                                                Images, wsp

                                                                  Subfamily Periplocoideae

                                                                  Periploca

                                                                  Silkvine (Periploca graeca) is native to eastern Europe and is listed as invasive in Northeastern Spain. It is capable of rooting vegetatively from small pieces of stem.[1]
                                                                  Vouchered plant specimens have been collected from Erie and Monroe counties, but it is not thought to have naturalized there.[1] It has also been reported along roadsides in Suffolk County, NY, and Fairfield County, CT, but it is uncertain whether those plants were cultivated or naturalized.[2]
                                                                  Gentianales — Apocynaceae — Periplocoideae — Periploca
                                                                  PeriplocaTourn. ex. L. Silk-vine N.Y. Status Images Distribution NY NPT
                                                                  L.

                                                                  1753. Periploca graecaL.
                                                                  1820. Periploca graecaSchult.
                                                                  Silkvine,
                                                                  Silk vine,
                                                                  Grecian silkvine
                                                                  Bourreau des arbres
                                                                  Introduced from
                                                                  Eurasia,
                                                                  Potentially invasive

                                                                  Perennial,
                                                                  Woody vine
                                                                  NYFA-X
                                                                  USDA-X0
                                                                  NPT 
                                                                  ARS 
                                                                  Trop.
                                                                  NSE BNA
                                                                  IPN 

                                                                  Images, wsp

                                                                    Subfamily Asclepiadoideae

                                                                    The New York Flora Atlas includes Asclepias, Cynanchum, and Periploca in Asclepiadaceae. It includes the three Vincetoxicum species as Cynanchum.[1]
                                                                    1. Asclepiadaceae Troy Weldy & David Werier (2013) New York Flora Atlas. New York Flora Association, Albany, New York.

                                                                    Tribe Asclepiadeae

                                                                    Subtribe Asclepiadinae
                                                                    Asclepias
                                                                    The milkweed genus Asclepias is here separated into two clades according to Fishbein, et. al. (2011).[1] Each of these clades contains milkweeds that support monarch butterfly developmemt. In New York, these are:
                                                                    • common milkweed (Asclepias syriaca)
                                                                    • swamp milkweed (Asclepias incarnata)
                                                                    • butterfly weed (Asclepias tuberosa)
                                                                    • whorled milkweed (Asclepias verticillata)
                                                                    • poke milkweed (Asclepias exaltata)

                                                                    Showy milkweed (Asclepias speciosa) also supports monarchs west of the Mississippi, where it is native, but the benefit of planting it in New York for this purpose could be questioned.


                                                                    Asclepias clade incarnata/verticillata
                                                                    Gentianales — Apocynaceae — Asclepiadoideae — Asclepiadeae — Asclepiadinae — Asclepias
                                                                    Asclepias Milkweed N.Y. Status Images Distribution NY NPT
                                                                    L.
                                                                    ssp. incarnata

                                                                    1753. Asclepias incarnataL.
                                                                    Western swamp milkweed,
                                                                    Swamp milkweed,
                                                                    Rose milkweed
                                                                    Asclépiade incarnate,
                                                                    Asclépiade rouge
                                                                    Native, C:4,
                                                                    Secure

                                                                    OBL

                                                                    Perennial,
                                                                    Herb-forb
                                                                    NYFA-5
                                                                    USDA-NN
                                                                    NPT Can
                                                                    ARS ITIS
                                                                    Trop.
                                                                    BNA


                                                                    Images, wsp
                                                                    L.
                                                                    ssp. pulchra(Ehrh. ex Willd.) Woodson

                                                                    1798. Asclepias pulchraEhrh. ex Willd.
                                                                    1840. Asclepias maritimaRaf. non Jacq.
                                                                    1921. A. incarnata var. neoscotica
                                                                    1954. A. incarnata var. pulchra
                                                                    Eastern swamp milkweed,
                                                                    Swamp milkweed
                                                                    Native, C:4,
                                                                    Vulnerable

                                                                    OBL

                                                                    Perennial,
                                                                    Herb-forb
                                                                    NYFA-3?
                                                                    USDA-N0
                                                                    NPT 
                                                                    ITIS
                                                                    Trop.
                                                                    BNA


                                                                    Images, wsp
                                                                    L.

                                                                    1753. Asclepias verticillataL.
                                                                    Whorled milkweed,
                                                                    Eastern whorled milkweed,
                                                                    Horsetail milkweed
                                                                    Native, C:9,
                                                                    Threatened,
                                                                    NYNHP: S2[1]

                                                                    FACU-UPL

                                                                    Perennial,
                                                                    Herb-forb
                                                                    NYFA-3
                                                                    USDA-NN
                                                                    NPT 
                                                                    ARS ITIS

                                                                    NSE BNA


                                                                    Images, wsp
                                                                    Asclepias clade syriaca/speciosa
                                                                    Gentianales — Apocynaceae — Asclepiadoideae — Asclepiadeae — Asclepiadinae — Asclepias
                                                                    Asclepias Milkweed N.Y. Status Images Distribution NY NPT
                                                                    L.

                                                                    1762. Asclepias syriacaL.
                                                                    1840. A. sericaRaf.
                                                                    1844. A. cornutiDecne.
                                                                    1904. A. kansanaVail
                                                                    1935. A. syriaca var. kansana
                                                                    Common milkweed,
                                                                    Kansas milkweed,
                                                                    Silkweed,
                                                                    Virginia silk
                                                                    Asclépiade commune,
                                                                    Cochons de lait,
                                                                    Herbe à coton
                                                                    Native, C:0,
                                                                    Secure
                                                                    NYFA-5
                                                                    USDA-N
                                                                    NPT Can
                                                                    ARS ITIS
                                                                    Trop.
                                                                    BNA


                                                                    Images, wsp
                                                                    Jacq.

                                                                    1767. Asclepias quadrifoliaJacq.
                                                                    1818. A. vanillaRaf.
                                                                    1840. A. quadrifolia
                                                                    var. oppositifolia
                                                                    Fourleaf milkweed,
                                                                    Four-leaved milkweed,
                                                                    Whorled milkweed
                                                                    Asclépiade à quatre feuilles
                                                                    Native, C:7,
                                                                    Secure
                                                                    NYFA-5
                                                                    USDA-NN
                                                                    NPT Can
                                                                    ITIS
                                                                    Trop.
                                                                    BNA


                                                                    Images, wsp
                                                                    L.

                                                                    1753. Asclepias tuberosaL.
                                                                    1753. Asclepias decumbensL.
                                                                    Butterfly-weed,
                                                                    Butterfly milkweed,
                                                                    Orange milkweed,
                                                                    Pleurisy root
                                                                    Asclépiade tubéreuse,
                                                                    Asclépiade de l'intérieur
                                                                    Native, C:2,
                                                                    Likely secure
                                                                    NYFA-4
                                                                    USDA-NN
                                                                    NPT Can
                                                                    ARS ITIS

                                                                    BNA


                                                                    Images, wsp
                                                                    Sm.

                                                                    1797. A. amplexicaulisSm.
                                                                    1803. A. obtusifoliaMichx.
                                                                    1832. A. rotundifoliaRaf.
                                                                    1930. A. gladewitziiFarw.
                                                                    Clasping milkweed,
                                                                    Blunt-leaved milkweed
                                                                    Native, C:2,
                                                                    Likely secure
                                                                    NYFA-4
                                                                    USDA-N
                                                                    NPT 
                                                                    ARS 
                                                                    Trop.
                                                                    BNA


                                                                    Images, wsp
                                                                    L.

                                                                    1756. Asclepias exaltataL.
                                                                    1762. A. syriaca var. exaltata
                                                                    1788. A. polystachyaWalter
                                                                    1814. A. phytolaccoides
                                                                    G.F. Lyon ex Pursh
                                                                    1904. A. bicknelliiVail
                                                                    Poke milkweed,
                                                                    Tall milkweed
                                                                    Asclépiade très grande,
                                                                    Grande asclépiade
                                                                    Native, C:6,
                                                                    Likely secure

                                                                    FACU-UPL

                                                                    Perennial,
                                                                    Herb-forb,
                                                                    Sun - part shade
                                                                    NYFA-4
                                                                    USDA-NN
                                                                    NPT Can
                                                                    ARS 
                                                                    Trop.
                                                                    BNA
                                                                    LBJ

                                                                    Images, wsp
                                                                    L.

                                                                    1753. Asclepias purpurascensL.
                                                                    1753. A. amoena L.
                                                                    1794. A. compressa Moench
                                                                    1832. A. dasypus Raf.
                                                                    1840. A. gonalis Raf.
                                                                    Purple milkweed,
                                                                    Eastern purple milkweed
                                                                    Asclépiade pourprée
                                                                    Native, C:2,
                                                                    Threatened,
                                                                    USFS-CA,
                                                                    NYNHP: 2[1]

                                                                    FACU

                                                                    Perennial,
                                                                    Herb-forb
                                                                    NYFA-2-3
                                                                    USDA-NN
                                                                    NPT Can
                                                                    ITIS
                                                                    Trop.
                                                                    BNA


                                                                    Images, wsp
                                                                    Raf.

                                                                    1808. Asclepias viridifloraRaf.
                                                                    1819. As. lanceolataE.Ives (i)
                                                                    1824. As. viridiflora var. lanceolata
                                                                    1829. Acerates viridiflora
                                                                    (Raf.) Pursh ex Eaton
                                                                    1841. Acerates lanceolataSteud.
                                                                    1946. As. viridiflora var. linearis
                                                                    Green milkweed,
                                                                    Green comet milkweed,
                                                                    Short green milkweed,
                                                                    Green-flowered milkweed
                                                                    Asclépiade à fleurs vertes
                                                                    Native, C:10,
                                                                    Threatened,
                                                                    NYNHP: 2[2]
                                                                    NYFA-2
                                                                    USDA-NN
                                                                    NPT Can
                                                                    ARS ITIS
                                                                    Trop.
                                                                    BNA
                                                                    LBJ

                                                                    Images, wsp

                                                                    White milkweed,
                                                                    Redring milkweed
                                                                    Native, C:10,
                                                                    Endangered,
                                                                    NYNHP: 1[3]
                                                                    NYFA-1
                                                                    USDA-N
                                                                    NPT 


                                                                    BNA


                                                                    Images, wsp
                                                                    L.

                                                                    1753. Asclepias rubraL.
                                                                    1788. A. cordataWalter (i)
                                                                    1803. A. laurifoliaMichx.
                                                                    1814. A. acuminataPursh
                                                                    1818. A. periplocaefoliaNutt.
                                                                    1903. A. rubra var. laurifolia
                                                                    Red milkweed,
                                                                    Tall pink bog milkweed
                                                                    Native, C:10,
                                                                    No recent reports

                                                                    OBL

                                                                    Perennial,
                                                                    Herb-forb,
                                                                    Sun - part shade
                                                                    NYFA-Z
                                                                    USDA-N
                                                                    NEW-0Can-0
                                                                    ITIS

                                                                    BNA
                                                                    LBJ

                                                                    Images, wsp
                                                                    Vail

                                                                    Asclepias amplexicaulis ×
                                                                    Asclepias syriaca

                                                                    1904. Asclepias intermediaVail
                                                                    Intermediate milkweed,
                                                                    Hybrid of
                                                                    clasping milkweed &
                                                                    common milkweed
                                                                    Native,
                                                                    Unranked
                                                                    NYFA-?
                                                                    USDA-NN



                                                                    BNA


                                                                    Images, wsp
                                                                    Torr.

                                                                    1827. Asclepias speciosaTorr.
                                                                    1837. Asclepias douglasiiHook.
                                                                    1931. Asclepias giffordiiEastw.
                                                                    Showy milkweed,
                                                                    Greek milkweed
                                                                    Belle asclépiade
                                                                    Introduced from
                                                                    w. North America,
                                                                    N. America native,
                                                                    No reports
                                                                    NYFA-P
                                                                    USDA-NN
                                                                    Can
                                                                    ARS ITIS
                                                                    Trop.
                                                                    BNA


                                                                    Images, wsp
                                                                    A. speciosa × syriaca

                                                                    Asclepias speciosa ×
                                                                    Asclepias syriaca

                                                                    Hybrid
                                                                    Showy milkweed &
                                                                    Common milkweed
                                                                    Native,
                                                                    Introduced,
                                                                    No reports




                                                                    BNA


                                                                    Images, wsp
                                                                    Note: [4]
                                                                    Subtribe Cynanchinae
                                                                    Many sources, including the New York Flora Atlas still include the Vincetoxicum species in Cynanchum.
                                                                      Cynanchum
                                                                      Gentianales — Apocynaceae — Asclepiadoideae — Asclepiadeae — Cynanchinae — Cynanchum
                                                                      CynanchumL. Swallow-wort N.Y. Status Images Distribution NY NPT
                                                                      (Michx.) Pers.

                                                                      1803. Gonolobus laevisMichx.
                                                                      1805. Cynanchum laevePers.
                                                                      1818. Enslenia albidaNutt.
                                                                      1894. Ampelamus albidusBritton
                                                                      2001. Ampelamus laevisKrings
                                                                      Honeyvine,
                                                                      Smooth swallowwort,
                                                                      Climbing milkweed
                                                                      Dompte-venin glabre
                                                                      Introduced,
                                                                      US South native
                                                                      NYFA-X
                                                                      USDA-NX
                                                                      Can
                                                                      ARS 
                                                                      Trop.
                                                                      BNA


                                                                      Images, wsp
                                                                        Subtribe Tylophorinae
                                                                        Vincetoxicum
                                                                        Vincetoxicum includes the two very highly invasive alien vines black swallow-wort (Vincetoxicum nigrum) and pale swallow-wort (Vincetoxicum rossicum), also known as dog-strangling vines, which are both well-established in parts of New York State. Aside from their general invasiveness and the subsequent loss of habitat for native plants, these milkweed relatives have been implicated in luring monarch butterflies away from native milkweed as a place to lay eggs. Because only milkweed can supprort monarch larvae, those that hatch from eggs laid on the swallow-wort cannot survive.

                                                                        As with some other invasive plants, when swallow-wort is first introduced in an area, its rate of spread is fairly slow, so the rate of future spread and the difficulty of controlling it is often underestimated. A phenomenon called the Allee effect is responsible for increasing the growth rate of individual swallow-wort plants as their population increases and the population of competing plants declines, up to a limit of course.[1] The root cause of this effect is not certain, but a likely contributor is allelopathy on the part of the invasive swallow-worts, which both produce the phytotoxin -(-) antofine.


                                                                        Gentianales — Apocynaceae — Asclepiadoideae — Asclepiadeae — Tylophorinae — Vincetoxicum
                                                                        Vincetoxicum Swallow-wort N.Y. Status Images Distribution NY NPT
                                                                        (L.) Moench

                                                                        1753. Asclepias nigraL.
                                                                        1802. Vincetoxicum nigrumMoench
                                                                        1805. Cynanchum nigrumPers. nom. illeg.
                                                                        1991. Cynanchum louiseaeKartesz & …
                                                                        Black swallow-wort,
                                                                        Black dog-strangling vine,
                                                                        Climbing poison,
                                                                        Louise's swallow-wort
                                                                        Dompte-venin noir,
                                                                        Cynaque noir,
                                                                        Cynanche noire
                                                                        Introduced from
                                                                        southern Europe,
                                                                        Very highly invasive,
                                                                        NYIS: 90%[1],
                                                                        Prohibited[2],
                                                                        CP-2[3]

                                                                        Perennial,
                                                                        Forb-herb, vine
                                                                        NYFA-X
                                                                        USDA-XX
                                                                        NPT Can
                                                                        ARS 

                                                                        BNA


                                                                        Images, wsp
                                                                        (Kleopow) Barbar.

                                                                        1929. Cynanchum rossicumKleopow
                                                                        1950. Vincetoxicum rossicumBarbar.
                                                                        1952. Antitoxicum rossicumPobed.
                                                                        auct. Cynanchum mediumnon R.Br.
                                                                        auct. Vincetoxicum mediumnon Dcne.
                                                                        Pale swallow-wort,
                                                                        European swallow-wort,
                                                                        Dog-strangling vine (DSV)
                                                                        Dompte-venin de Russie
                                                                        Introduced from
                                                                        eastern Europe,
                                                                        Very highly invasive,
                                                                        NYIS: 88%[4],
                                                                        Prohibited[2],
                                                                        CP-3[5]

                                                                        Perennial,
                                                                        Forb-herb, vine
                                                                        NYFA-X
                                                                        USDA-XX
                                                                        NPT Can
                                                                        ARS 

                                                                        BNA


                                                                        Images, wsp
                                                                        Medik.

                                                                        1753. Asclepias vincetoxicumL.
                                                                        1790. Vincetoxicum hirundinariaMedik.
                                                                        1794. Vincetoxicum officinaleMoench
                                                                        1805. Cynanchum vincetoxicum(L.) Pers.
                                                                        1883. Vincetoxicum vincetoxicumH.Karst.
                                                                        1961. Alexitoxicon vincetoxicumH.P.Fuchs
                                                                        White swallow-wort,
                                                                        Pale swallow-wort,
                                                                        White dog-strangling vine,
                                                                        Poison-rope swallowwort
                                                                        Dompte-venin officinal
                                                                        Introduced,
                                                                        Questionable[6]

                                                                        Perennial,
                                                                        Forb-herb, vine
                                                                        NYFA-X
                                                                        USDA-XX
                                                                        Can
                                                                        ARS 
                                                                        Trop.
                                                                        BNA


                                                                        Images, wsp

                                                                        Ericales
                                                                        Flora of New York Gentianales
                                                                        Solanales
                                                                        Table of
                                                                        contents
                                                                        Genus
                                                                        index
                                                                        Protected species index Invasive species index
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