Botrychium

Botrychium subg. Botrychium

Botrychium matricariifolium daisy-leaved moonwort

Ophioglossales — Ophioglossaceae — Botrychium subg. Botrychium
Botrychium subg. Botrychium	Moonwort, grape fern	N.Y. Status	Images	Distribution	NY NPT
Botrychium matricariifolium (Döll) A.Braun ex W.D.J.Koch 1843. B. lunaria var. matricariifolium 1847. B. neglectum Alph.Wood 1847. B. matricariifolium ex W.D.J.Koch	Daisy-leaved moonwort, Chamomile grape-fern, Matricary grapefern Botryche à feuille  de matricaire	Native, C:7, Likely secure FACU Perennial, Fern			NYFA-4 USDA-NN NPT Can FNA  BNA Images, wsp
Botrychium angustisegmentum (Pease & A.H.Moore) Fernald 1906. B. lanceolatum var. angustisegmentum 1915. B. angustisegmentum (Pease & A.H.Moore) Fernald 1937. B. lanceolatum ssp. angustisegmentum	Narrow triangle moonwort, Narrow moonwort, Lance-leaved grape-fern Botryche à segments étroits	Native, C:7, Likely secure FACW Perennial, Fern			NYFA-4 USDA-NN NPT Can ITIS FNA Trop. BNA Images, wsp
Botrychium simplex  E.Hitchc. 1823. B. simplex E.Hitchc. 1899. B. tenebrosum A.A.Eaton	Least grape-fern, Little grape-fern	Native, C:9, Likely secure Perennial, Fern			NYFA-4-5 USDA-NN NPT  BNA Images, wsp
Botrychium tenebrosum A.A.Eaton     B. simplex var. tenebrosum     B. tenebrosum A.A.Eaton	Shade-loving moonwort, Swamp moonwort	Native, C:10, Endangered Perennial, Fern			NYFA-U NPT  Images, wsp
Botrychium neolunaria Stensvold & Farrar 1753. Osmunda lunaria L. misapplied 1801. B. lunaria (L.) Sw. misappl. 1903. B. onondagense Underw. 1923. B. lunaria var. onondagense 2017. B. neolunaria Stensvold & Farrar	Moonwort grape-fern, Common moonwort	Native, C:10, Endangered, CA, NYNHP: 1[1] Perennial, Fern			NYFA-1 USDA-NN NPT Can FNA  BNA Images, wsp
Botrychium minganense  Vict. 1927. B. minganense Vict. 1937. B. lunaria var. minganense 1965. B. lunaria ssp. minganense	Mingan's moonwort, Mingan moonwort, Mingan Island moonwort Botryche de Mingan	Native, C:10, Endangered, CA, NYNHP: 1[2] Perennial, Fern			NYFA-1 USDA-N NPT  BNA Images, wsp
Botrychium campestre W.H.Wagner & Farrar     B. minganense (in part)	Prairie moonwort, Prairie dunewort, Dunewort, Iowa moonwort	Native, C:10, No recent reports, NYNHP: 1[3] Perennial, Fern			NYFA-Z USDA-NN NPT  BNA Images, wsp
Botrychium subg. Botrychium (excluded taxa)	Moonwort, grape fern	N.Y. Status	Images	Distribution	NY NPT
Botrychium lanceolatum (S.G.Gmel.) Ångstr.      1854. B. lanceolatum (S.G.Gmel.) Ångstr.	Triangle moonwort Botryche élancé	N. America native, N.Y. excluded Perennial, Fern			NYFA-XCLD FNA  Images, wsp
Botrychium ascendens W.H.Wagner 1986. B. ascendens W.H.Wagner	Triangle-lobe moonwort, Upswept moonwort, Ascending grapefern Botryche ascendant	Native, Unreported Perennial, Fern			NYFA-D USDA-NN NPT Can ITIS FNA Trop. BNA Images, wsp
↑ New York Natural Heritage Program. 2016. Online Conservation Guide for Botrychium lunaria. Endangered, S1/G5. ↑ New York Natural Heritage Program. 2016. Online Conservation Guide for Botrychium minganense. Endangered, S1/G4G5. ↑ New York Natural Heritage Program. 2016. Online Conservation Guide for Botrychium campestre. Endangered, S1/Gx.

Botrychium subg. Osmundopteris

The subgenus Osmundopteris (sometimes treated as the genus Botrypus) contains a single, fairly widespread Rattlesnake fern species in New York.

Ophioglossales — Ophioglossaceae — Botrychium subg. Osmundopteris
Botrychium subg. Osmundopteris	Rattlesnake fern	N.Y. Status	Images	Distribution	NY NPT
Botrychium virginianum  (L.) Sw. 1753. Osmunda virginiana L. 1800. Botrychium virginianum Sw. 1803. Botrypus virginianus Michx. 1814. Botrychium gracile Pursh 1938. Osmundopteris virginiana Small 1958. Japanobotrychium virginianum M.Nishida	Rattlesnake fern, Rattlesnake grapefern, Virginia grapefern Botryche de Virginie	Native, C:8, Secure			NYFA-5 USDA-NN NPT Can FNA Trop. Images, wsp

Botrychium subg. Sceptridium

Botrychium dissectum cut-leaved grape-fern The subgenus Sceptridium, often treated as a separate genus Sceptridium Lyon (1905), contains the evergreen grape ferns, four species of which are native to New York.

Ophioglossales — Ophioglossaceae — Botrychium subg. Osmundopteris sect. Sceptridium
Botrychium subg. Sceptridium	Evergreen grape fern	N.Y. Status	Images	Distribution	NY NPT
Botrychium dissectum  Spreng. 1804. Botrychium dissectum Spreng. 1810. Botrychium obliquum Muhl. 1902. B. dissectum var. obliquum 1905. Sceptridium dissectum Lyon 1905. Sceptridium obliquum Lyon	Cut-leaved grape-fern, Cutleaf grapefern, Dissected grapefern	Native, C:3, Secure			NYFA-5 USDA-NN NPT Can FNA Trop. BNA Images, wsp Note: CA
Botrychium multifidum (S.G.Gmel.) Rupr.     B. californicum Underw.     B. coulteri Underw.     B. silaifolium C.Presl     Sceptridium multifidum	Leathery grape-fern, Leather grape-fern	Native, C:3, Secure			NYFA-5 USDA-NN NPT  BNA Images, wsp
Botrychium oneidense (Gilbert) House 1901. B. ternatum var. oneidense 1905. B. oneidense House 1916. B. multifidum var. oneidense 1924. B. dissectum var. oneidense 1998. Sceptridium oneidense Holub	Blunt-lobed grape-fern, Bluntlobe grapefern, Oneida grape fern	Native, C:5, Threatened, CA, NYNHP: 2[1]			NYFA-2-3 USDA-NN NPT  BNA Images, wsp
Botrychium rugulosum W.H.Wagner     B. multifidum fo. dentatum  auct. B. ternatum non (Thunb.) Sw.     Sceptridium rugulosum	Ternate grapefern, Rugulose grape-fern, St. Lawrence grape-fern, Botryche à limbe rugueux	Native, C:6, Endangered, Few populations, CA, NYNHP: 1[2]			NYFA-1 USDA-NN NPT  FNA  BNA Images, wsp
Botrychium subg. Sceptridium (excluded taxa)	Evergreen grape fern	N.Y. Status	Images	Distribution	NY NPT
Botrychium biternatum (Savigny) Underw. 1798. Osmunda biternata Savigny 1896. B. biternatum (Savigny) Underw. 1903. B. tenuifolium Underw. 1905. Sceptridium tenuifolium (Underw.) Lyon 1905. S. biternatum (Savigny) Lyon 1924. B. dissectum var. tenuifolium	Sparselobe grapefern, Sparse-lobe grape fern	N. America native, N.Y. excluded			NYFA-XCLD USDA-N0 FNA Trop. Images, wsp
↑ New York Natural Heritage Program. 2016. Online Conservation Guide for Botrychium oneidense. Threatened, S2/G4. ↑ New York Natural Heritage Program. 2016. Online Conservation Guide for Botrychium rugulosum. Endangered, S1/G3.

Ophioglossum

Ophioglossum pusillum northern adder's-tongue Northern adder's-tongue may appear in wet meadows, swamp edges, and thickets.

Ophioglossales — Ophioglossaceae — Ophioglossum
Ophioglossum	Adder's-tongue	N.Y. Status	Images	Distribution	NY NPT
Ophioglossum pusillum  Raf. 1814. Ophioglossum pusillum Raf. 1927. O. vulgatum var. alaskanum 1917. O. vulgatum var. pseudopodum  auct. O. vulgatum non L. (s.s.)	Northern adder's-tongue Herbe-sans-couture	Native, C:5, Vulnerable FACW Perennial, Fern			NYFA-3 USDA-N NPT  ITIS FNA  IPN LBJ Images, wsp
Ophioglossum (excluded)	Adder's-tongue	N.Y. Status	Images	Distribution	NY NPT
Ophioglossum vulgatum  L. 1753. Ophioglossum vulgatum L. 1939. O. vulgatum var. pycnostichum 1977. O. pycnostichum (Fernald) A.Löve & D.Löve	Southern adder's-tongue, English adder's-tongue Herbe sans couture	N. America native, N.Y. excluded			NYFA-XCLD USDA-N0 ARS  FNA  IPN LBJ Images, wsp

Equisetum

Equisetum subg. Equisetum

Equisetum arvense field horsetail The Equisetum subgenus Equisetum comprises the horsetails.

Equisetales — Equisetaceae — Equisetum subg. Equisetum
Equisetum subg. Equisetum	Horsetail	N.Y. Status	Images	Distribution	NY NPT
Equisetum arvense  L. 1753. Equisetum arvense L. 1832. Equisetum boreale Bong. 1912. Allostelites arvensis (L.) Börner 1960. Equisetum calderi B.Boivin	Field horsetail, Common horsetail, Common field horsetail Prêle des champs, Queue de renard	Native, C:2, Secure FAC			NYFA-5 USDA-NN NPT Can ARS ITIS FNA Trop. NSE  IPN  Images, wsp
Equisetum fluviatile  L. 1753. Equisetum fluviatile L. 1753. Equisetum limosum L. 1904. E. fluviatile var. limosum (L.) Farw.	Water horsetail, River horsetail Prêle fluviatile	Native, C:4, Secure OBL			NYFA-5 USDA-NN NPT  ARS ITIS FNA Trop. Images, wsp
Equisetum × litorale Kühlew. ex Rupr. (pro sp.)   Equisetum arvense ×   Equisetum fluviatile 1845. Equisetum litorale Kühlew. ex Rupr.	Litoral horsetail Prêle littorale	Native, Rare OBL			NYFA-3 USDA-NN NPT  ITIS FNA  Images, wsp
Equisetum sylvaticum  L. 1753. Equisetum sylvaticum L. 1795. Equisetum capillare Hoffm.	Wood horsetail, Woodland horsetail Prêle des bois	Native, C:7, Secure FACW			NYFA-5 USDA-NN NPT  ARS ITIS FNA  Images, wsp
Equisetum palustre  L. 1753. Equisetum palustre L. 1927. E. palustre var. americanum Vict.	Marsh horsetail Prêle des marais	Native, C:5, Threatened, NYNHP: 2[1] FACW			NYFA-2 USDA-NN NPT  ARS ITIS FNA  Images, wsp
Equisetum pratense  Ehrh. 1784. Equisetum pratense Ehrh.	Meadow horsetail, Shady horsetail Prêle des prés	Native, C:4, Threatened, NYNHP: 2[2] FACW			NYFA-2 USDA-NN NPT  ARS ITIS FNA  Images, wsp
Equisetum (excluded) subg. Equisetum	Horsetail	N.Y. Status	Images	Distribution	NY NPT
Equisetum telmateia  Ehrh. ssp. braunii (Milde) Hauke 1862. Equisetum braunii Milde 1978. Equisetum telmateia var. braunii  auct. Equisetum maximum non Lam.	Giant horsetail, Great horsetail, Ivory horsetail Prêle géante	Introduced from  western N. America, N.Y. excluded OBL			NYFA-XCLD USDA-NN Can ARS ITIS FNA  Images, wsp
↑ New York Natural Heritage Program. 2016. Online Conservation Guide for Equisetum palustre. Threatened, S2/G5. ↑ New York Natural Heritage Program. 2016. Online Conservation Guide for Equisetum pratense. Threatened, S2/G5.

Equisetum subg. Hippochaete

Equisetum hyemale ssp. affine western scouringrush Plants of subg. Hippochaete are often referred to as scouring rushes. Christenhusz et. al. (2019) suggests that the western scouringrush (Equisetum hyemale ssp. affine) should be treated at the species level (Equisetum praealtum Raf.).[1] ↑ Christenhusz, M. J. M., Bangiolo, L., Chase, M. W., Fay, M. F., Husby, C., Witkus, M., & Viruel, J. (2019). Phylogenetics, classification and typification of extant horsetails (Equisetum, Equisetaceae). Botanical Journal of the Linnean Society, 189(4), 311-352. https://doi.org/10.1093/botlinnean/boz002

Equisetales — Equisetaceae — Equisetum subg. Hippochaete
Equisetum subg. Hippochaete	Scouringrush	N.Y. Status	Images	Distribution	NY NPT
Equisetum hyemale  L. ssp. affine Calder & Roy L.Taylor     Equisetum affine Engelm.     Equisetum praealtum Raf.     Equisetum robustum A.Braun     Hippochaete hyemalis (L.) Braun	Common scouringrush, Western scouringrush, Rough horsetail, Scouringrush horsetail Prêle d'hiver	Native, C:2, Secure			NYFA-5 USDA-NN NPT  iNat ARS ITIS FNA  Images, wsp
Equisetum scirpoides Michx. (1803)	Dwarf scouring rush Prêle faux-scirpe	Native, C:9, Secure			NYFA-5 USDA-NN ITIS FNA  Images, wsp
Equisetum variegatum Schleich. ex F.Weber & D.Mohr ssp. variegatum     Equisetum variegatum Schleich. ex F.Weber & D.Mohr     Equisetum variegatum var. variegatum     Hippochaete variegata (Schleich. ex F.Weber & D.Mohr) Bruhin	Variegated scouring rush, Variegated horsetail Prêle panachée	Native, C:3, Likely secure FACW Perennial, Herb			NYFA-4 USDA-NN NPT Can ITIS FNA  Images, wsp
Equisetum × mackaii   Equisetum hyemale ×   Equisetum variegatum	Rough-toothed scouring rush	Native, C:3, Vulnerable			NYFA-3 USDA-N Images, wsp
Equisetum × nelsonii (A.A.Eaton) J.H.Schaffn.   Equisetum laevigatum ×   Equisetum variegatum 1904. E. variegatum var. nelsonii 1926. E. nelsoni J.H.Schaffn.	Nelson's scouring rush, Nelson's horsetail	Native, Unranked			NYFA-U USDA-NN ARS ITIS FNA  Images, wsp
Equisetum × ferrissii  Clute   Equisetum hyemale ×   Equisetum laevigatum 1903. E. hyemale var. intermedium 1904. Equisetum ferrissii Clute 1917. Equisetum intermedium Rydb. 1951. E. hyemale var. elatum	Ferris' scouring rush	Native, Unranked			NYFA-U USDA-NN ARS  Images, wsp
Equisetum (excluded) subg. Hippochaete	Scouring rush	N.Y. Status	Images	Distribution	NY NPT
Equisetum laevigatum A.Braun (1844)     E. funstonii     E. kansanum     Hippochaete laevigata	Smooth scouring-rush	N. America native, N.Y. excluded			NYFA-XCLD USDA-NN Images, wsp

Osmundastrum

Osmundales — Osmundaceae — Osmundastrum
Osmundastrum	Cinnamon fern	N.Y. Status	Images	Distribution	NY NPT
Osmundastrum cinnamomeum (L.) C.Presl var. cinnamomeum 1753. Osmunda cinnamomea L. 1841. Osmunda cinnamomea var. frondosa 1847. Osmundastrum cinnamomeum (L.) C.Presl 1868. Osmunda cinnamomea var. imbricata 1902. Osmunda cinnamomea var. glandulosa 1909. Osmunda cinnamomea var. fokiensis	Cinnamon fern, Buckhorn Osmonde cannelle	Native, C:6, Secure, DEC-D[1] OBL-FACW Perennial, Herb-fern			NYFA-5 USDA-NN NPT Can ARS ITIS Trop. Images, wsp Note: FEIS
↑ New York State Department of Environmental Conservation (DEC) Regulation §193.3, Protected Native Plants, (d) Exploitably vulnerable.

Osmunda

Osmundales — Osmundaceae — Osmunda
Osmunda subg. Claytosmunda	Flowering fern	N.Y. Status	Images	Distribution	NY NPT
Osmunda claytoniana  L. 1753. Osmunda claytoniana L. 1801. Struthiopteris claytoniana (L.) Bernh. 1848. Plenasium claytonianum (L.) C. Presl 1941. Osmundastrum claytonianum (L.) Tagawa	Interrupted fern, Clayton's fern Osmonde de Clayton	Native, C:4, Secure, DEC-D[1] FAC Perennial, Herb-fern			NYFA-5 USDA-N NPT Can Trop. Images, wsp
Osmunda subg. Osmunda	Flowering fern	N.Y. Status	Images	Distribution	NY NPT
Osmunda regalis  L. var. spectabilis (Willd.) A. Gray 1810. Osmunda spectabilis Willd. 1856. Osmunda regalis var. spectabilis 1977. Osmunda regalis ssp. spectabilis	Royal fern, Regal fern, Flowering fern Osmonde royale, Fougère royale	Native, C:6, Secure, DEC-D[1] OBL Perennial, Herb-fern			NYFA-5 USDA-N Can ARS  Images, wsp
1 2 New York State Department of Environmental Conservation (DEC) Regulation §193.3, Protected Native Plants, (d) Exploitably vulnerable.

Crepidomanes

The only member of the Hymenophyllaceae found in New York is a gametophitic weft fern Crepidomanes intricatum, which was transferred from Trichomanes to the mostly Asian Crepidomanes genus by Ebihara & Weakley (2011) based on molecular sequence. Crepidomanes intricatum is assumed to be gametophitic only. Sporophitic generations of this plant have not been observed.^[1][2]

Hymenophyllales — Hymenophyllaceae — Crepidomanes
Crepidomanes	Grotto felt	N.Y. Status	Images	Distribution	NY NPT
Crepidomanes intricatum (Farrar) Ebihara & Weakley 1992. Trichomanes intricatum Farrar 2011. Crepidomanes intricatum (Farrar) Ebihara & Weakley	Appalachian bristle fern, Appalachian trichomanes, Filmy fern, Weft fern	Native, C:10, Endangered, DEC-A[3]			NYFA-1 USDA-N0 NPT  ITIS FNA Trop. Images, wsp
↑ Weakley et al. (2011). "Nomenclatural changes in the flora of the southeastern United States". Journal of the Botanical Research Institute of Texas 5(2): 443. ↑ Ebihara Atsushi, Donald R. Farrar & Motomi Ito (2008). "The sporophyte-less filmy fern of eastern North America Trichomanes intricatum (Hymenophyllaceae) has the chloroplast genome of an Asian species." American Journal of Botany, 95(12): 1645-1651. ↑ New York State Department of Environmental Conservation (DEC) Regulation §193.3, Protected Native Plants, (a) Endangered.

Lygodium

Schizaeales — Lygodiaceae — Lygodium
Lygodium	Climbing fern	N.Y. Status	Images	Distribution	NY NPT
Lygodium palmatum  (Bernh.) Sw. 1800. Gisopteris palmata Bernh. 1806. Lygodium palmatum (Bernh.) Sw.	American climbing fern, Creeping fern, Hartford fern, Windsor fern	Native, C:10, Endangered, DEC-A[1] FACW Perennial, Herb-fern			NYFA-1 USDA-N0 FNA  Images, wsp
↑ New York State Department of Environmental Conservation (DEC) Regulation §193.3, Protected Native Plants, (a) Endangered.

Schizaea

Schizaeales — Schizaeaceae — Schizaea
Schizaea Sm.	Curlygrass fern	N.Y. Status	Images	Distribution	NY NPT
Schizaea pusilla  Pursh 1814. Schizaea pusilla Pursh	Curlygrass, Curly-grass fern, Little curlygrass fern	Native, C:9, Endangered, DEC-A[1] OBL Perennial, Herb-fern			NYFA-1 USDA-N FNA  Images, wsp
↑ New York State Department of Environmental Conservation (DEC) Regulation §193.3, Protected Native Plants, (a) Endangered.

Azolla

Azolla cristata, mosquito fern Azolla (mosquito ferns) have previously been placed in their own family, the Azollaceae. The taxonomy of the New World Azolla species has been in dispute - four species have been reported in the literature: A. caroliniana, A. filiculoides, A. mexicana and A. microphylla, but Evrard and Van Hove (2004) concluded that only two species exist in America and, according to the priority rule for nomenclature, they should be named A. cristata and A. filiculoides.[1][2] Azolla filiculoides has been excluded from the New York Flora Atlas. ↑ The New York Flora Atlas states: "Evrard and Hove (2004) provide evidence that the correct name for this taxon is A. cristata and that A. caroliniana, which has been misapplied to A. cristata, is a true synonym of A. filiculoides." ↑ C. Evrard & C. Van Hove (2004) Taxonmy of the American Azolla species (Azollaceae): a critical review Systematics and Geography of Plants 74:301-318

Salviniales — Salviniaceae — Azolla sect. Azolla
Azolla sect. Azolla	Mosquitofern	N.Y. Status	Images	Distribution	NY NPT
Azolla cristata  Kaulf. 1824. Azolla cristata Kaulf. 1827. Azolla portoricensis Spreng. 1830. Azolla mexicana Schltdl. & Cham. nom. nud. 1844. Azolla mexicana Schltdl. & Cham. ex Kunze 1845. Azolla mexicana Schltdl. & Cham. ex C.Presl  auct. Azolla caroliniana non Willd.  auct. Azolla filiculoides non Lam.	Mosquito fern, Carolina mosquitofern, Eastern mosquito-fern, Fairy-moss, Mosquito-plant Azolle de Caroline, Azolla de Caroline	Native, C:2, Threatened, DEC-D[1] OBL Annual, Herb-fern			NYFA-2? USDA-NX NPT Can ITIS FNA Trop. Images, wsp Note: [2][3]
Azolla (excluded taxa)	Mosquitofern	N.Y. Status	Images	Distribution	NY NPT
Azolla filiculoides  Lam. 1783. Azolla filiculoides Lam. 1810. Azolla caroliniana Willd. 1810. Azolla magellanica Willd. 1824. Azolla microphylla Kaulf. 1827. Azolla arbuscula Desv.	Pacific mosquitofern, Pacific azolla, Fern azolla, Large mosquito fern, Duckweed fern, Redwater fern Azolle fausse-filicule, Azolla fausse-filicule	N. America native, N.Y. excluded			NYFA-XCLD USDA-NX Can ARS ITIS FNA Trop. Images, wsp
↑ New York State Department of Environmental Conservation (DEC) Regulation §193.3, Protected Native Plants, (d) Exploitably vulnerable. ↑ The New York Flora Atlas states: "Evrard and Hove (2004) provide evidence that the correct name for this taxon is A. cristata and that A. caroliniana, which has been misapplied to A. cristata, is a true synonym of A. filiculoides." ↑ C. Evrard & C. Van Hove (2004) Taxonmy of the American Azolla species (Azollaceae): a critical review Systematics and Geography of Plants 74:301-318

Salvinia

The two species of Salvinia previously reported in New York have been excluded in the New York Flora Atlas as of 9/18/2016.^[1]

The genus Salvinia (watermoss) contains mostly tropical, aquatic ferns. S. minima, mistakenly reported as S. natans has been reported from ponds on Staten Island and Rockland County, but these may have been aquarium escapes, as this genus is unlikely to be able to naturalize that far north.^[2]

DEC regulation 193.3 Protected native plants, lists Salvinia minima as Exploitably vulnerable,^[3] even though it is a Central and South American native that is considered to be invasive in the southeastern U.S.^[4]

Salviniales — Salviniaceae — Salvinia
Salvinia Seg. (excluded species)	Watermoss	N.Y. Status	Images	Distribution	NY NPT
Salvinia minima  Baker 1886. Salvinia minima Baker  auct. Salvinia natans non (L.) All.  auct. Salvinia rotundifolia non Willd.	Floating-fern, Water-fern, Water spangles, Common watermoss	Introduced from  S. America, N.Y. excluded, DEC-D[5]			NYFA-XCLD USDA-XX NPT  ARS  Images, wsp
Salvinia natans 1753. Marsilea natans L. 1785. Salvinia natans (L.) All.	Floating watermoss	Introduced from  Eurasia,  northen Africa, N.Y. excluded, Old World native			NYFA-XCLD USDA-X ARS  Images, wsp Note: [6]
↑ Salvinia minima, Weldy, Troy, David Werier, and Andrew Nelson. 2016 New York Flora Atlas. New York Flora Association, Albany, New York. ↑ Salvinia, New York Metropolitan Flora Project Science Staff, 02/16/2012. ↑ New York Codes, Rules and Regulations ↑ https://gobotany.newenglandwild.org/species/salvinia/minima/ ↑ New York State Department of Environmental Conservation (DEC) Regulation §193.3, Protected Native Plants, (d) Exploitably vulnerable. ↑ The New York Flora Atlas states: "Most likely all New York material previously referred to as Salvinia natans is actually S. minima."

Marsilea

Marsilea quadrifolia, European water-clover Although fairly rare, European water-clover can have large local populations and is considered to be potentially invasive in the Finger Lakes and Lower Hudson Valley.[1][2] According to the USDA-NRCS PLANTS database, Marsilea quadrifolia is native to parts of Ontario, Canada,[3] but other sources list it as only a European native.[4] ↑ New York non-native plant invasiveness assessment – Marsilea: quadrifolia (Unranked). ↑ New York Flora Atlas: Marsilea quadrifolia ↑ USDA-NRCS PLANTS Profile: Marsilea quadrifolia Native Status ↑ USDA, ARS, National Genetic Resources Program. Germplasm Resources Information Network - (GRIN) Online Database. National Germplasm Resources Laboratory, Beltsville, Maryland. (21 June 2013)

Salviniales — Marsileaceae — Marsilea
Marsilea	Waterclover	N.Y. Status	Images	Distribution	NY NPT
Marsilea quadrifolia	European water-clover, European water fern, Water shamrock, European pepperwort Marsilée à quatre feuilles, Marsile à quatre feuilles	Introduced from  Europe, Potentially invasive, NYIS: 45%[1]			NYFA-X USDA-XN‽ NPT Can ARS  FNA  Images, wsp
↑ New York non-native plant invasiveness assessment – Marsilea quadrifolia: U 45 - Finger Lakes & Lower Hudson .