Flora of New York/Cyperaceae 3

← Cyperaceae 2: Carex	Flora of New York — Cyperaceae (cont'd)				→ Poaceae 1: Panicoideae
	Table of contents	Genus index	Protected species index	Invasive species index

Family Cyperaceae (cont'd)

Subfamily Cyperoideae (cont'd)

Tribe Dulichieae

Dulichium

Poales — Cyperaceae — Cyperoideae — Dulichieae — Dulichium
Dulichium	Threeway sedge	N.Y. Status	Images	Distribution	NY NPT
Dulichium arundinaceum (L.) Britton var. arundinaceum	Three-way sedge	Native, C:8, Secure OBL Perennial, Graminoid			NYFA-5 USDA-NN NPT Images, wsp

Tribe Abildgaardieae

Bulbostylis

Poales — Cyperaceae — Cyperoideae — Abildgaardieae — Bulbostylis
Bulbostylis Kunth	Hairsedge	N.Y. Status	Images	Distribution	NY NPT
Bulbostylis capillaris (L.) Kunth ex C.B.Clarke ssp. capillaris Scirpus capillaris L. Fimbristylis capillaris (L.) A.Gray Stenophyllus capillaris (L.) Britton	Densetuft hairsedge	Native, Secure			NYFA-5 USDA-NN Images, wsp

Fimbristylis

Poales — Cyperaceae — Cyperoideae — Abildgaardieae — Fimbristylis
Fimbristylis Vahl	Fimbry	N.Y. Status	Images	Distribution	NY NPT
Fimbristylis autumnalis (L.) Roem. & Schult. Scirpus autumnalis L. F. autumnalis (L.) Roem. & Schult. F. geminata (Nees) Kunth	Autumn fimbry, Slender fimbry	Native, C:5, Secure OBL-FACW Annual, Graminoid			NYFA-5 USDA-NN Images, wsp
Fimbristylis castanea (Michx.) Vahl Scirpus castaneus Michx.	Marsh fimbry	Native, C:10, Threatened OBL-FACW Perennial, Graminoid			NYFA-2 USDA-N0 Images, wsp
Fimbristylis puberula (Michx.) Vahl var. puberula Fimbristylis puberula (Michx.) Vahl	Hairy fimbry	Native, C:10, Likely extirpated OBL-FACW Perennial, Graminoid			NYFA-Z USDA-NN Images, wsp
Fimbristylis (excluded taxa)	Fimbry	N.Y. Status	Images	Distribution	NY NPT
Fimbristylis caroliniana (Lam.) Fernald 1791. Scirpus carolinianus Lam. 1913. Fimbristylis harperi Britton 1940. Fimbristylis caroliniana Fernald	Carolina fimbry	N. America native, N.Y. excluded			NYFA-XCLD USDA-N0 Images, wsp

Tribe Fuireneae

Bolboschoenus

Bolboschoenus species are known as tuberous bulrushes or tuber-bulrushes. This genus has also been considered a section of Scirpus.

Poales — Cyperaceae — Cyperoideae — Fuireneae — Bolboschoenus
Bolboschoenus	Tuberous bulrush	N.Y. Status	Images	Distribution	NY NPT
Bolboschoenus fluviatilis (Torr.) Soják 1836. Scirpus maritimus var. fluviatilis 1856. Scirpus fluviatilis (Torr.) A.Gray 1972. B. fluviatilis (Torr.) Soják 1981. B. maritimus ssp. fluviatilis 1993. Schoenoplectus fluviatilis M.T.Strong	River bulrush, River tuber-bulrush Bolboschoenus fluviatile, Scirpe fluviatile	Native, C:4, Secure			NYFA-5 USDA-NN NPT ARS FNA Trop. Images, wsp
Bolboschoenus robustus (Pursh) Soják Scirpus robustus Pursh Schoenoplectus robustus 1972. B. robustus (Pursh) Soják	Sea-coast bulrush, Saltmarsh bulrush, Sturdy bulrush	Native, C:9, Vulnerable			NYFA-3-4 USDA-NN NPT ARS ITIS FNA Images, wsp
Bolboschoenus novae-angliae (Britton) S.G.Sm. Schoenoplectus novae-angliae Scirpus novae-angliae Britton 1995. B. novae-angliae (Britton) S.G.Sm.	New England bulrush, Saltmarsh bulrush	Native, C:10, Endangered			NYFA-1 USDA-N0 NPT Images, wsp
Bolboschoenus maritimus (L.) Palla ssp. paludosus (A.Nelson) T.Koyama 1899. Scirpus paludosus A.Nelson 1905. Scirpus pacificus Britton ex Parish 1926. Scirpus maritimus var. paludosus 1971. Schoenoplectus maritimus (L.) Lye 1980. B. maritimus ssp. paludosus	American saltmarsh bulrush, Seaside bulrush, Cosmopolitan bulrush, Prairie bulrush Bolboschoenus des marais salés, Scirpe des marais salés	Native, C:8, Endangered			NYFA-2 USDA-NN NPT ARS FNA Trop. Images, wsp
Bolboschoenus maritimus (L.) Palla ssp. maritimus	European saltmarsh bulrush	Introduced, Unk. naturalization			NYFA-Xu USDA-N?M NPT Images, wsp
Bolboschoenus glaucus (Lam.) S.G.Sm. 1791. Scirpus glaucus Lam. 1834. Scirpus maritimus var. glaucus 1995. B. glaucus (Lam.) S.G.Sm. 1999. Schoenoplectus glaucus (Lam.) Kartesz auct. Scirpus tuberosus non Desf.	Tuberous bulrush	Introduced			NYFA-X USDA-X0 NPT ITIS FNA Trop. IPN Images, wsp
Bolboschoenus (excluded taxa)	Tuberous bulrush	N.Y. Status	Images	Distribution	NY NPT
B. maritimus × robustus Bolboschoenus maritimus × Bolboschoenus robustus		Native, N.Y. excluded			NYFA-D Images, wsp

Fuirena

Poales — Cyperaceae — Cyperoideae — Fuireneae — Fuirena
Fuirena Rottb.	Umbrella-sedge	N.Y. Status	Images	Distribution	NY NPT
Fuirena pumila (Torr.) Spreng. 1824. Fuirena squarrosa var. pumila 1825. Fuirena pumila (Torr.) Spreng. 1833. Fuirena torreyana L.C.Beck 1890. Fuirena simplex var. pumila	Dwarf umbrella-sedge Dwarf umbrella-grass	Native, Rare			NYFA-3 USDA-NN FNA Trop. Images, wsp
Fuirena squarrosa Michx. 1803 F. hispida Elliott	Hairy umbrella-sedge	Native, Unranked			NYFA-U^[1] USDA-N0 Images, wsp
↑ The New York Flora Atas states: "All studied vouchers reported as Fuirena squarrosa from New York sites have been annotated to Fuirena pumila." The USDA-NRCS PLANTS database, however, shows F. squarrosa present on Long Island, but no protected status is given for New York. Flora of North America also shows F. squarrosa present in N. Y.

Schoenoplectus

Schoenoplectus (bulrush) has been separated from Scirpus due to phylogenetic differences.

The Schoenoplectus sections used here are from Flora of North America.

Poales — Cyperaceae — Cyperoideae — Fuireneae — Schoenoplectus
Schoenoplectus sect. Schoenoplectus	Bulrush	N.Y. Status	Images	Distribution	NY NPT
Schoenoplectus pungens (Vahl) Palla var. pungens Scirpus pungens Vahl 1888. Sch. pungens (Vahl) Palla Scirpus americanus var. polyphyllus Scirpus pungens var. polyphyllus auct. Scirpus americanus non Pers.	Three-square bulrush, Common three-square bulrush, Chair-maker’s rush, Sharp club-rush, Scirpe acere	Native, Secure			NYFA-5 USDA-NN NPT ARS ITIS FNA Images, wsp
Schoenoplectus americanus (Pers.) Volkart ex Schinz & R.Keller (1905) Scirpus americanus Persoon Scirpus olneyi A.Gray Scirpus pungens var. longisetus Scirpus pungens ssp. monophyllus	Three-square bulrush, Olney’s three-square bulrush, Chairmaker's bulrush, American bulrush	Native, Secure			NYFA-5 USDA-NN NPT ARS ITIS FNA Images, wsp
Schoenoplectus acutus (Muhl. ex Bigelow) Á.Löve & D.Löve (1954) var. acutus Scirpus acutus Schoenoplectus lacustris ssp. acutus	Hardstem bulrush, Hard-stemmed bulrush, Scirpe aigu	Native, Secure			NYFA-5 USDA-NN NPT ARS ITIS FNA Images, wsp
Sch. tabernaemontani (Gmel.) Palla	Softstem bulrush, Soft-stemmed bulrush, Great bulrush Scirpe des étangs	Native, Secure			NYFA-5 USDA-NN NPT ARS Images, wsp
Schoenoplectus heterochaetus (Chase) Soják	Slender bulrush	Native, C:9, Endangered			NYFA-2 USDA-NN NPT Images, wsp
Schoenoplectus × oblongus (T. Koyama) Soják [ acutus × heterochaetus ]	Oblong bulrush	Native, Unranked			NYFA-U Images, wsp
S. acutus × tabernaemontani	Bulrush	Native, Unranked			NYFA-U Images, wsp
Schoenoplectus sect. Malacogeton	Bulrush	N.Y. Status	Images	Distribution	NY NPT
Schoenoplectus subterminalis (Torr.) Soják	Water bulrush	Native, C:10, Secure			NYFA-5u USDA-NN NPT Images, wsp
Schoenoplectus torreyi (Olney) Palla	Torrey's bulrush, Torrey’s three-square bulrush	Native, C:10, Threatened OBL			NYFA-2 USDA-NN NPT FNA Images, wsp

Schoenoplectiella

Schoenoplectiella (bulrush) has been separated from Scirpus due to phylogenetic differences.

Poales — Cyperaceae — Cyperoideae — Fuireneae — Schoenoplectiella
Schoenoplectiella	Bulrush	N.Y. Status	Images	Distribution	NY NPT
Schoenoplectiella smithii (A. Gray) Hayasaka var. smithii Schoenoplectiella smithii (A. Gray) Hayasaka Scirpus smithii var. smithii Schoenoplectus smithii var. smithii	Smith’s bulrush	Native, C:10, Likely secure			NYFA-4 USDA-NN NPT Images, wsp
Schoenoplectiella smithii (A. Gray) Hayasaka var. setosa (Fernald) Hayasaka Scirpus smithii var. setosus Schoenoplectus smithii var. setosus (Fernald) S.G. Sm. Schoenoplectiella smithii var. setosa (Fernald) Hayasaka	Smith’s bristly bulrush	Native, C:10, Endangered			NYFA-1 USDA-NN NPT Images, wsp
Schoenoplectiella purshiana (Fernald) Lye var. purshiana Schoenoplectiella purshiana Scirpus purshianus Fernald Scirpus debilis Pursh Schoenoplectus purshianus var. purshianus Scirpus smithii var. williamsii	Weak-stalked bulrush Weakstalk bulrush Weak-stalk club-rush	Native, C:6, Unranked OBL Annual, Graminoid			NYFA-UN USDA-NN NPT FNA Images, wsp
Schoenoplectiella mucronata (L.) J. Jung & H.K. Choi 1753. Scirpus mucronatus L. 1888. Schoenoplectus mucronatus (L.) Palla 2010. Schoenoplectiella mucronata (L.) J. Jung & H.K. Choi	Bog bulrush Ricefield bulrush Roughseed bulrush	Introduced from Eurasia, northern Africa, Australia, Naturalized OBL Perennial, Graminoid			NYFA-Xn USDA-XX NPT ARS ITIS FNA Images, wsp

Tribe Eleocharideae

Eleocharis

There are approximately 28 species of Eleocharis (spike-rush) found in New York. They are arranged here according to the system used in Flora of North America.^[1]

↑ S. Galen Smith, Jeremy J. Bruhl, M. Socorro González-Elizondo & Francis J. Menapace. "8. ELEOCHARIS", Flora of North America Vol. 23

Eleocharis subg. Limnochloa

Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Limnochloa
Eleocharis subg. Limnochloa	Spikerush	N.Y. Status	Images	Distribution	NY NPT
Eleocharis robbinsii Oakes 1841. Eleocharis robbinsii Oakes	Robbin's spike-rush, Robbins' spikerush, Éléocharide Robbins	Native, Rare			NYFA-3 USDA-NN ITIS FNA Images, wsp
Eleocharis equisetoides (Elliott) Torr. 1816. Scirpus equisetoides Elliott 1832. Eleocharis elliottii A.Dietr. (i) 1836. E. equisetoides (Elliott) Torr. 1852. Limnochloa equisetoides (Elliott) Walp.	Horse-tail spike-rush, Jointed spikesedge, Jointed spikerush, Knotted spike-rush	Native, Threatened			NYFA-2 USDA-NN ITIS FNA Trop. Images, wsp
Eleocharis quadrangulata (Michx.) Roem. & Schult. Scirpus quadrangulatus Michx.	Squarestem spikerush, Square-stemmed spike-rush	Native, Endangered			NYFA-1 USDA-NN Images, wsp
Eleocharis subg. Limnochloa (excluded taxa)	Spikerush	N.Y. Status	Images	Distribution	NY NPT
Eleocharis interstincta (Vahl) Roem. & Schult. 1805. Scirpus interstinctus Vahl 1817. Eleocharis interstincta (Vahl) Roem. & Schult. 1920. Trichophyllum interstinctum (Vahl) House	Knotted spikerush	N. America native, N.Y. excluded			NYFA-XCLD USDA-N0 FNA Trop. BNA Images, wsp
Eleocharis mutata (L.) Roem. & Schult. 1759. Scirpus mutatus L 1817. E. mutata (L.) Roem. & Schult. 1920. Trichophyllum mutatum (L.) House	Scallion grass	Introduced, N.Y. excluded OBL			NYFA-XCLD USDA-00 ITIS Trop. Images, wsp

Eleocharis subg. Scirpidium

Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Scirpidium
Eleocharis	Spikerush	N.Y. Status	Images	Distribution	NY NPT
Eleocharis acicularis (L.) Roem. & Schult. (1817)	Needle spike-rush, Needle spikesedge, Dwarf hair-grass, Scirpe épingle, Éléocharide aciculaire	Native, Secure			NYFA-5 USDA-NN NPT ARS ITIS FNA Images, wsp
Eleocharis wolfii (A.Gray) A.Gray ex Britton (1876) Scirpus wolfii A.Gray	Wolf’s spike-rush, Wolf’s spikerush	Introduced, Midwest native, Impersistent			NYFA-Xm USDA-N0 NPT ITIS FNA Images, wsp

Eleocharis subg. Zinserlingia

Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Zinserlingia
Eleocharis	Spikerush	N.Y. Status	Images	Distribution	NY NPT
Eleocharis quinqueflora (Hartmann) O. Schwarz 1767. Scirpus quinqueflorus Hartmann 1777. Scirpus pauciflorus Lightf. 1827. E. pauciflora (Lightf.) Link 1949. E. quinqueflora (Hartmann) O. Schwarz	Few-flowered spike-rush, Fewflower spikerush, Fewflowered spikesedge, Éléocharide à cinq fleurs	Native, Vulnerable			NYFA-3? USDA-NN NPT ITIS FNA Trop. Images, wsp

Eleocharis subg. Eleocharis sect. Parvulae

Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Eleocharis
Eleocharis sect. Parvulae	Spikerush	N.Y. Status	Images	Distribution	NY NPT
Eleocharis parvula (Roem. & Schult.) Link ex Bluff, Nees & Schauer 1815. Scirpus nanus Spreng. 1817. Scirpus parvulus Roem. & Schult. 1836. E. parvula (Roem. & Schult.) Link ex Bluff, Nees & Schauer 1836. E. pygmaea Torr. 1888. E. parvula (Roem. & Schult.) Palla (i)	Salt-loving spike-rush, Dwarf spikerush, Dwarf spike-rush, Small spike-rush, Little-head spikerush Ėléocharide naine	Native, C:7, Likely secure Perennial			NYFA-4? USDA-NN NPT ITIS FNA Trop. Images, wsp

Eleocharis subg. Eleocharis sect. Eleogenus ser. Maculosae

Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Eleocharis sect. Eleogenus
Eleocharis ser. Maculosae	Spikerush	N.Y. Status	Images	Distribution	NY NPT
Eleocharis flavescens (Poir.) Urb. var. olivacea (Torr.) Gleason 1836. Eleocharis olivacea Torr. 1935. E. flaccida var. olivacea 1952. E. flavescens var. olivacea	Yellow spike-rush, Green spike-rush, Bright green spikerush Éléocharide olivâtre	Native, Secure			NYFA-5 USDA-NN FNA Images, wsp
Eleocharis ser. Maculosae (excluded taxa)	Spikerush / spikesedge	N.Y. Status	Images	Distribution	NY NPT
Eleocharis flavescens (Poir.) Urb. var. flavescens 1805. Scirpus flavescens Poir. 1900. E. flaccida (Rchb. ex A.Spreng.) Urb. 1903. E. flavescens (Poir.) Urb.	Yellow spikerush	N. America native, N.Y. excluded			NYFA-XCLD USDA-N0 FNA Trop. Images, wsp
Eleocharis geniculata (L.) Roem. & Schult. 1753. Scirpus geniculatus L. 1817. E. geniculata (L.) Roem. & Schult.	Canada spikesedge	N. America native, N.Y. excluded			NYFA-XCLD USDA-NN FNA Trop. Images, wsp

Eleocharis subg. Eleocharis sect. Eleogenus ser. Ovatae

Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Eleocharis sect. Eleogenus
Eleocharis ser. Ovatae	Spikerush / Spikesedge	N.Y. Status	Images	Distribution	NY NPT
Eleocharis obtusa (Willd.) Schult. 1809. Scirpus obtusus Willd. 1824. Eleocharis obtusa (Willd.) Schult. 1926. E. ovata var. obtusa	Blunt spikerush, Blunt spike-rush Éléocharide obtuse	Native, Secure			NYFA-5 USDA-NN NPT ITIS FNA Trop. Images, wsp
Eleocharis ovata (Roth) Roem. & Schult. (1817)	Ovate spikerush, Ovate spike-rush Éléocharide ovale	Native, Threatened			NYFA-1-2 USDA-NN NPT ITIS FNA Images, wsp
Eleocharis engelmannii Steud. (1855) 1889. E. ovata var. engelmannii 1899. E. monticola Fernald 1946. E. obtusa var. engelmannii	Engelmann spike-rush, Engelmann's spikerush, Engelmann's spike-rush	Native, Endangered			NYFA-1 USDA-NN NPT ITIS FNA Images, wsp
Eleocharis aestuum D.M.Hines ex A.Haines (2001)	Tidal spikerush, Tidal spike-rush	Native, Endangered			NYFA-1 USDA-NN NPT ITIS FNA Images, wsp
Eleocharis diandra C.Wright (1883)	Wright's spikerush, Wright's spike-rush, Wright's spikesedge	Native, Endangered			NYFA-1 USDA-NN NPT ITIS FNA Images, wsp

Eleocharis subg. Eleocharis sect. Eleocharis ser. Eleocharis

Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Eleocharis sect. Eleocharis
Eleocharis ser. Eleocharis	Spikerush	N.Y. Status	Images	Distribution	NY NPT
Eleocharis erythropoda Steud. 1823. Scirpus glaucus Torr. nom. illeg. 1841. Eleocharis palustris* var. australis 1843. Eleocharis calva Torr. 1848. Eleocharis palustris var. calva 1855. Eleocharis erythropoda Steud. 1920. Trichophyllum palustre var. calvum 1929. E. calva (A.Gray) Torr. ex Fernald & Brackett	Red-footed spike-rush, Bald spikerush, Bald spikesedge, Bald spike-rush Éléocharide à tiges rouges	Native, C:4, Secure OBL Perennial, Graminoid			NYFA-5 USDA-NN NPT ITIS FNA Trop. Kew Images, wsp
Eleocharis tenuis (Willd.) Schult. var. tenuis 1809. Scirpus tenuis Willd. 1824. E. tenuis (Willd.) Schult. auct. E. elliptica non Kunth auct. E. Capitata non (L.) R. Br.	Slender spike-rush, Dog’s hair Éléocharide grêle	Native, C:4, Secure Perennial, Graminoid			NYFA-5 USDA-NN NPT ITIS FNA Images, wsp
Eleocharis tenuis (Willd.) Schult. var. pseudoptera (Weath.) Svenson 1932. E. capitata var. pseudoptera 1939. E. tenuis var. pseudoptera 1972. E. elliptica var. pseudoptera	Slender spikerush, Slender spike-rush Éléocharide à tige ailée	Native, C:4, Endangered, NYNHP: 1^[1] Perennial, Graminoid			NYFA-1 USDA-NN NPT ITIS FNA Trop. Images, wsp
Eleocharis elliptica Kunth 1837. E. elliptica Kunth 1932. E. capitata var. borealis 1932. E. compressa var. atrata 1952. E. tenuis var. borealis 1960. E. compressa var. borealis	Elliptic spike-rush, Elliptic spikerush, Slender spike-rush Éléocharide elliptique	Native, C:5, Secure Perennial, Graminoid			NYFA-5 USDA-NN NPT ITIS FNA Trop. Images, wsp
Eleocharis palustris (L.) Roem. & Schult. 1753. Scirpus palustris L. 1817. E. palustris (L.) Roem. & Schult. E. smallii Britton E. calva var. australis	Common spike-rush, Creeping spike-rush, Marsh spike-rush Éléocharide des marais	Native, C:5, Secure OBL Perennial, Graminoid			NYFA-5 USDA-NN NPT ARS ITIS FNA Images, wsp
Eleocharis uniglumis (Link) Schult. var. halophila	Salt-marsh spike-rush Éléocharide unigume	Native, C:8, Threatened, NYNHP: 2^[2] OBL Perennial, Graminoid			NYFA-2 USDA-NN NPT FNA Trop. Images, wsp
Eleocharis compressa Sull. var. compressa 1842. E. compressa Sull. E. elliptica var. compressa E. elliptica var. atrata	Flatstem spikerush, Flat-stemmed spike-rush Éléocharide comprimée	Native, C:9, Unranked Perennial, Graminoid			NYFA-U USDA-NN NPT ITIS FNA Images, wsp
Eleocharis tricostata Torr.	Three-ribbed spike-rush, Three-angled spike-rush	Native, C:10, Endangered, NYNHP: 1^[3] OBL-FACW Perennial, Graminoid			NYFA-1 USDA-N0 NPT Images, wsp
Eleocharis ambigens Fernald 1922. E. fallax Weath. p.p. 1935. E. ambigens Fernald	Ambiguous spikerush, Obscure spikerush, Creeping spikerush Éléocharide ambiquë	Native, C:10, Endangered OBL Perennial, Graminoid			NYFA-1 USDA-NN NPT Can ITIS FNA Trop. Images, wsp
Eleocharis ser. Eleocharis (excluded taxa)	Spikerush	N.Y. Status	Images	Distribution	NY NPT
Eleocharis fallax Weath. 1922. E. fallax Weath. 1935. E. ambigens Fernald	Creeping spikerush	N. America native, N.Y. excluded OBL Perennial, Graminoid			NYFA-XCLD USDA-NN NPT FNA Trop. Images, wsp
↑ New York Natural Heritage Program. 2016. Online Conservation Guide for Eleocharis tenuis var. pseudoptera. Endangered, S1/G5T5?. ↑ New York Natural Heritage Program. 2016. Online Conservation Guide for Eleocharis uniglumis var. halophila. Threatened, S2/G4. ↑ New York Natural Heritage Program. 2016. Online Conservation Guide for Eleocharis tricostata. Endangered, S1/G4.

Eleocharis subg. Eleocharis sect. Eleocharis ser. Tenuissimae

Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Eleocharis sect. Eleocharis
Eleocharis ser. Tenuissimae	Spikerush / Spikesedge	N.Y. Status	Images	Distribution	NY NPT
Eleocharis intermedia Schult.	Intermediate spike-rush, Matted spike-rush	Native, C:8, Likely secure OBL-FACW Perennial, Graminoid			NYFA-4 USDA-NN NPT Images, wsp
Eleocharis tuberculosa	Long-tubercled spike-rush	Native, C:10, Threatened OBL-FACW Perennial, Graminoid			NYFA-2 USDA-NN NPT Images, wsp
Eleocharis tortilis (Link) Schult. 1820. Scirpus tortilis Link 1824. E. tortilis (Link) Schult. auct. E. simplex non A.Dietr. 1832	Twisted spike-rush, Twisted spike-sedge	Native, C:10, No recent reports			NYFA-Z USDA-N0 ARS ITIS FNA Trop. Images, wsp
Eleocharis microcarpa Torr. var. filiculmis Torr.	Small-fruited spike-rush	Native, Unknown			NYFA-U Images, wsp

Eleocharis subg. Eleocharis sect. Eleocharis ser. Melanocarpae

Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Eleocharis sect. Eleocharis
Eleocharis ser. Melanocarpae	Spikerush	N.Y. Status	Images	Distribution	NY NPT
Eleocharis melanocarpa Torr. 1836. Eleocharis melanocarpa Torr. 1866. Scirpus melanocarpus (Torr.) Griseb. 1891. Scirpus melanocarpus (Torr.) Kuntze	Black-fruited spike-rush	Native, C:10, Rare FACW Perennial, Graminoid			NYFA-3 USDA-N0 FNA Trop. Images, wsp

Eleocharis subg. Eleocharis sect. Eleocharis ser. Rostellatae

Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Eleocharis sect. Eleocharis
Eleocharis ser. Rostellatae	Spikerush / Spikesedge	N.Y. Status	Images	Distribution	NY NPT
Eleocharis rostellata (Torr.) Torr. 1836. Scirpus rostellatus Torr. 1843. E. rostellata (Torr.) Torr.	Beaked spikerush, Beaked spike-rush, Beaked spikesedge, Walking sedge	Native, Likely secure			NYFA-4 USDA-NN NPT ARS ITIS FNA Images, wsp

Eleocharis subg. Eleocharis sect. Eleocharis ser. Albidae

Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Eleocharis sect. Eleocharis
Eleocharis ser. Albidae (excluded taxa)	Spikerush	N.Y. Status	Images	Distribution	NY NPT
Eleocharis albida Torr 1836. Eleocharis albida Torr.	White spikerush	N. America native, N.Y. excluded			NYFA-XCLD USDA-N0 FNA Trop. Images, wsp

Tribe Cypereae

Cyperus

Most of the species of Cyperus (pronounced sie-PEER-us) go by common names containing flat-sedge, or in some cases umbrella-sedge, nut-sedge, or nut-grass.

Cyperus subg. Cyperus

Poales — Cyperaceae — Cyperoideae — Cypereae — Cyperus subg. Cyperus^[1]
Cyperus subg. Cyperus sect. Neohemicarpha	Dwarf bulrush	N.Y. Status	Images	Distribution	NY NPT
Cyperus subsquarrosus (Muhl.) Bauters yyyy. Scirpus micranthus Vahl yyyy. Lipocarpha micrantha (Vahl) G.Tucker yyyy. Hemicarpha micrantha (Vahl) Pax yyyy. Cyperus subsquarrosus (Muhl.) Bauters	Small-flowered dwarf bulrush, Dwarf bulrush, Smallflower halfchaff sedge	Native, Endangered			NYFA-5 USDA-NN Images, wsp
↑ Flora of North America Vol. 23, 15d. Cyperus subg. Cyperus

Cyperus subg. Diclidium

Poales — Cyperaceae — Cyperoideae — Cypereae — Cyperus subg. Diclidium^[1]
Cyperus	Flatsedge	N.Y. Status	Images	Distribution	NY NPT
Cyperus odoratus L.	Fragrant flatsedge, Rusty flatsedge	Native, Vulnerable			NYFA-3 USDA-NN NPT Images, wsp
↑ Flora of North America Vol. 23, 15e. Cyperus subg. Diclidium

Cyperus subg. Juncellus

Poales — Cyperaceae — Cyperoideae — Cypereae — Cyperus subg. Cyperus^[1]
Cyperus subg. Juncellus	Flatsedge	N.Y. Status	Images	Distribution	NY NPT
Cyperus strigosus L.	False yellow nut sedge, Straw-colored flatsedge, False nutsedge	Native, C:3, Secure FACW Perennial, Graminoid			NYFA-5 USDA-NN NPT Images, wsp
Cyperus squarrosus L.	Awned flatsedge, Awned cyperus, Bearded flatsedge, Bearded flat sedge	Native, C:2, Secure OBL-FACW Annual, Graminoid			NYFA-5 USDA-NN NPT Images, wsp
Cyperus lupulinus (Spreng.) Marcks ssp. macilentus (Fernald) Marcks	Eastern flatsedge, Great Plains flatsedge	Native, C:4, Secure Perennial, Graminoid			NYFA-5 USDA-NN NPT Images, wsp
Cyperus lupulinus (Spreng.) Marcks ssp. lupulinus	Great Plains flatsedge	Native, C:8, Threatened Perennial, Graminoid			NYFA-2 USDA-NN NPT Images, wsp
Cyperus erythrorhizos Muhl.	Redroot flatsedge	Native, C:6, Vulnerable			NYFA-3 USDA-NN NPT Images, wsp
Cyperus grayi Torr.	Gray's flatsedge	Native, C:8, Vulnerable			NYFA-3 USDA-N0 NPT Images, wsp
Cyperus houghtonii Torr.	Houghton's flatsedge, Houghton's umbrella-sedge	Native, C:8, Vulnerable			NYFA-3 USDA-NN NPT Images, wsp
Cyperus schweinitzii	Schweinitz's flatsedge	Native, C:7, Rare			NYFA-2-3 NPT Images, wsp
Cyperus echinatus	Globe flatsedge, Teasel sedge	Native, C:8, Endangered			NYFA-1 USDA-N0 NPT Images, wsp
Cyperus retrorsus Chapm.	Reflexed flatsedge, Cylindric sedge, Pine barren flatsedge, Retrorse flatsedge	Native, C:7, Endangered			NYFA-1 USDA-N0 NPT Images, wsp
Cyperus plukenetii Fernald 1945. Cyperus plukenetii Fernald	Plukenet's cyperus	Native, Likely extirpated			NYFA-Z USDA-N0 NPT FNA Trop. Images, wsp
Cyperus compressus L.	Poorland flatsedge	Introduced, US South native			NYFA-X USDA-N0 NPT Images, wsp
Cyperus esculentus L. var. macrostachyus	Chufa flatsedge, Yellow nut-grass, Yellow nutsedge	Native, C:1, Unranked			NYFA-X USDA-N0 NPT Images, wsp
Cyperus esculentus L. var. leptostachyus	Chufa flatsedge, Yellow nut-grass, Yellow nutsedge	Native, C:1, Unranked			NYFA-U USDA-XX NPT Images, wsp
Cyperus iria L.	Ricefield flatsedge	Introduced			NYFA-X USDA-XX NPT Images, wsp
Cyperus microiria Steud. Cyperus microiria Steud. auct. Cyperus amuricus	Asian flatsedge	Introduced, Naturalized			NYFA-X NPT Images, wsp
Cyperus rotundus	Purple flatsedge, Purple nut-sedge, Coco-grass	Introduced, Impersistent			NYFA- NPT Images, wsp
Cyperus subg. Cyperus (excluded taxa)	Flatsedge	N.Y. Status	Images	Distribution	NY NPT
Cyperus filiculmis Vahl 1805. Cyperus filiculmis Vahl 1888. Cyperus martindalei Britton 1902. Chlorocyperus filiculmis (Vahl) Falla 1974. Mariscus filiculmis (Vahl) T. Koyama 1974. Cyperus lupulinus (Spreng.) Marcks p.p.	Slender cyprus, Eastern flatsedge, Great plains flatsedge	N. America native, N.Y. excluded			NYFA-XCLD NPT FNA Trop. Images, wsp
Cyperus amuricus 1855. Cyperus microiria Steud. (correct NY sp.) 1859. Cyperus amuricus Maxim. (misapplied)	Asian flatsedge	Introduced, N.Y. excluded			NYFA-XCLD USDA-X0 NPT FNA Trop. Images, wsp
↑ Desmet, P., & Brouilet, L. 2013. Database of Vascular Plants of Canada (VASCAN): a community contributed taxonomic checklist of all vascular plants of Canada, Saint Pierre and Miquelon, and Greenland. PhytoKeys 25: 55-67. http://dx.doi.org/10.3897/phytokeys.25.3100

Cyperus subg. Kyllinga

Poales — Cyperaceae — Cyperoideae — Cypereae — Kyllinga
Cyperus subg. Kyllinga	Spikesedge	N.Y. Status	Images	Distribution	NY NPT
Cyperus brevifolioides Thieret & Delahouss. 1844. Cyperus brevifolus (Rottb.) Endl. ex Hassk. misapplied 1866. Kyllinga gracillima Miq. 1956. Cyperus brevifolus var. leiolepis 1967. Cyperus brevifolioides Thieret & Delahouss. 1987. Kyllinga brevifolioides (Thieret & Delahoussaye) G.C. Tucker	Asiatic greenhead sedge, Pasture spikesedge	Introduced, Rare			NYFA-X USDA-N0 Images, wsp
Cyperus hortensis (Salzm. ex Schltdl.) Dorr 1803. Kyllinga pumila Michx. 1849. K. hortensis Salzm. pro syn. 1855. K. tenuifolia Steud. 1936. Cyperus densicaespitosus Mattf. & Kük. 1944. C. tenuifolius (Steud.) Dandy 2014. C. hortensis (Salzm. ex Schltdl.) Dorr	Annual greenhead sedge, Low spikesedge	Introduced, N. America native, Rare			NYFA-X USDA-N0 FNA Images, wsp

Cyperus subg. Pycnostachys

Poales — Cyperaceae — Cyperoideae — Cypereae — Cyperus subg. Pycnostachys
Cyperus	Flatsedge	N.Y. Status	Images	Distribution	NY NPT
Cyperus dentatus	Toothed sedge	Native, Vulnerable			NYFA-3 USDA-NN Images, wsp
Cyperus acuminatus	Taper-tipped flatsedge, Tapertip flatsedge	Introduced, N. America native			NYFA-X USDA-NN Images, wsp
Cyperus difformis	Variable flatsedge	Introduced, Moderately invasive, NYIS: 52%^[1]			NYFA-0 USDA-X0 Images, wsp
Cyperus involucratus Rottb. auct. C. alternifolius non L. C. alternifolius ssp. flabelliformis C. flabelliformis Rottb.	Alternate-leaved flatsedge, Umbrella-plant	Introduced, Impersistent			NYFA-X USDA-XX Images, wsp
↑ New York non-native plant invasiveness assessment – Cyperus difformis: Moderate (52).

Cyperus subg. Pycreus

Poales — Cyperaceae — Cyperoideae — Cypereae — Cyperus subg. Pycreus
Cyperus subg. Pycreus	Flatsedge	N.Y. Status	Images	Distribution	NY NPT
Cyperus bipartitus Torr. 1836. Cyperus bipartitus Torr. 1837. Cyperus rivularis Kunth 1907. Pycreus rivularis (Kunth) Palla 1908. Pycreus bipartitus (Torr.) C.B.Clarke 1958. Cyperus niger var. rivularis	Slender flatsedge, Shining flatsedge Souchet des rivières, Souchet bipartite	Native, Secure FACW Annual, Graminoid			NYFA-5 USDA-NN NPT Can FNA Trop. Images, wsp
Cyperus diandrus Torr. 1819. Cyperus diandrus Torr. 1819. Torreya maritima (Torr.) Raf. 1908. Pycreus diander (Torr.) C.B.Clarke	Umbrella flatsedge, Low umbrella flatsedge, Low cyperus Souchet diandre	Native, Secure OBL-FACW			NYFA-5? USDA-NN NPT Can FNA Images, wsp
Cyperus filicinus Vahl 1805. Cyperus filicinus Vahl 1868. C. polystachyos var. macrostachyos	Fern flatsedge	Native, Rare OBL Annual-perennial, Graminoid			NYFA-3? USDA-N0 NPT FNA Trop. Images, wsp
Cyperus polystachyos Rottb. 1773. Cyperus polystachyos Rottb. 1816. Pycreus polystachyos (Rottb.) P.Beauv. 1828. Cyperus brizaeus J.Presl & C.Presl	Many-spiked flat sedge, Manyspike flatsedge, Bunchy flat sedge	Native, Endangered Annual-perennial, Graminoid			NYFA-1-2 USDA-N0 NPT ARS FNA Trop. Images, wsp
Cyperus flavescens L. 1753. Cyperus flavescens L. 1814. Cyperus poiformis Pursh 1830. Pycreus flavescens (L.) Rchb. 1939. Cyperus flavescens var. poiformis	Yellow flatsedge, Yellow flat sedge, Annual yellow flatsedge, Pale flatsedge Souchet jaunâtre	Native, Endangered OBL Annual, Graminoid			NYFA-1 USDA-NN NPT Can FNA Images, wsp
Cyperus flavicomus Michx. 1803. Cyperus flavicomus Michx.	White-edged flat sedge, Whiteedge flatsedge	Introduced from southern US, Impersistent FAC Annual, Graminoid			NYFA-Xm USDA-N0 FNA Images, wsp

Genus Scirpoides

Poales — Cyperaceae — Cyperoideae — Cypereae — Scirpoides
Scirpoides (excluded taxa)	Bulrush	N.Y. Status	Images	Distribution	X NPT
Scirpoides holoschoenus (L.) Soják 1753. Scirpus holoschoenus L. 1827. Holoschoenus vulgaris Link 1897. Holoschoenus romanus (L.) Fritsch 1972. Scirpoides holoschoenus (L.) Soják	Round-headed bulrush, Roundhead bulrush, Roughhead bulrush	Introduced from Eurasia, northern Africa, N.Y. excluded			NYFA-XCLD USDA-X ARS Trop. BNA Images, wsp

← Cyperaceae 2: Carex	Flora of New York — Cyperaceae (cont'd)				→ Poaceae 1: Panicoideae
	Table of contents	Genus index	Protected species index	Invasive species index

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[1] The New York Flora Atas states: "All studied vouchers reported as Fuirena squarrosa from New York sites have been annotated to Fuirena pumila." The USDA-NRCS PLANTS database, however, shows F. squarrosa present on Long Island, but no protected status is given for New York. Flora of North America also shows F. squarrosa present in N. Y.

[2] S. Galen Smith, Jeremy J. Bruhl, M. Socorro González-Elizondo & Francis J. Menapace. "8. ELEOCHARIS", Flora of North America Vol. 23