Flora of New York/Cyperaceae 3

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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)[edit | edit source]

Subfamily Cyperoideae (cont'd)[edit | edit source]

Tribe Eleocharideae[edit | edit source]

Eleocharis[edit | edit source]
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]
Eleocharis subg. Limnochloa[edit | edit source]
Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Limnochloa
Genus Eleocharissubg. Limnochloa Spikerush N.Y. Status Images Distribution NY NPT
 Oakes

1841. Eleocharis robbinsii Oakes
    
    
Robbin's spike-rush,
Robbins' spikerush,
Éléocharide Robbins
Native,
Rare

NYFA: 3

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(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

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(Michx.) Roem. & Schult.

    Scirpus quadrangulatus Michx.
    
    
Squarestem spikerush,
Square-stemmed spike-rush
Native,
Endangered

NYFA: 1

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Genus Eleocharissubg. Limnochloa (excluded taxa) Spikerush N.Y. Status Images Distribution NY NPT
(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-Excluded

USDA-N0
FNA
Tropicos
BONAP
Images
Wikispecies
(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-Excluded

USDA-00
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Eleocharis subg. Scirpidium[edit | edit source]
Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Scirpidium
Genus Eleocharis Spikerush N.Y. Status Images Distribution NY NPT
(L.) Roem. & Schult. (1817)

Needle spike-rush,
Needle spikesedge,
Dwarf hair-grass,
Scirpe épingle,
Éléocharide aciculaire
Native,
Secure

NYFA: 5

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(A.Gray) A.Gray ex Britton (1876)

Scirpus wolfii A.Gray
Wolf’s spike-rush,
Wolf’s spikerush
Introduced,
Midwest native,
Impersistent

NYFA: Xm

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Eleocharis subg. Zinserlingia[edit | edit source]
Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Zinserlingia
Genus Eleocharis Spikerush N.Y. Status Images Distribution NY NPT
(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?

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Eleocharis subg. Eleocharis sect. Parvulae[edit | edit source]
Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Eleocharis
Genus Eleocharissect. Parvulae Spikerush N.Y. Status Images Distribution NY NPT
(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, CoC: 7,
Likely secure

Perennial

NYFA: 4?

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Eleocharis subg. Eleocharis sect. Eleogenus ser. Maculosae[edit | edit source]
Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Eleocharis sect. Eleogenus
Genus Eleocharisser. Maculosae Spikerush N.Y. Status Images Distribution NY NPT
 (Poir.) Urb.
var. olivacea (Torr.) Gleason

1836. Eleocharis olivacea Torr.
1935. E. flaccidavar. olivacea
1952. E. flavescensvar. olivacea
Yellow spike-rush,
Green spike-rush,
Bright green spikerush
Éléocharide olivâtre
Native,
Secure

NYFA: 5

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Genus Eleocharisser. Maculosae (excluded taxa) Spikerush / spikesedge N.Y. Status Images Distribution NY NPT
(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-Excluded

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(L.) Roem. & Schult.

1753. Scirpus geniculatus L.
1817. E. geniculata (L.) Roem. & Schult.
    
Canada spikesedge N. America native,
N.Y. excluded

NYFA-Excluded

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Eleocharis subg. Eleocharis sect. Eleogenus ser. Ovatae[edit | edit source]
Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Eleocharis sect. Eleogenus
Genus Eleocharisser. Ovatae Spikerush / Spikesedge N.Y. Status Images Distribution NY NPT
 (Willd.) Schult.

1809. Scirpus obtusus Willd.
1824. Eleocharis obtusa (Willd.) Schult.
1926. E. ovatavar. obtusa
Blunt spikerush,
Blunt spike-rush
Éléocharide obtuse
Native,
Secure

NYFA: 5

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(Roth) Roem. & Schult. (1817)

    
    
    
Ovate spikerush,
Ovate spike-rush
Éléocharide ovale
Native,
Threatened

NYFA: 1-2

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Steud. (1855)

1889. E. ovatavar. engelmannii
1899. E. monticola Fernald
1946. E. obtusavar. engelmannii
Engelmann spike-rush,
Engelmann's spikerush,
Engelmann's spike-rush
Native,
Endangered

NYFA: 1

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D.M.Hines ex A.Haines (2001)

    
    
    
Tidal spikerush,
Tidal spike-rush
Native,
Endangered

NYFA: 1

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 C.Wright (1883)

    
    
    
Wright's spikerush,
Wright's spike-rush,
Wright's spikesedge
Native,
Endangered

NYFA: 1

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Eleocharis subg. Eleocharis sect. Eleocharis ser. Eleocharis[edit | edit source]
Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Eleocharis sect. Eleocharis
Genus Eleocharisser. Eleocharis Spikerush N.Y. Status Images Distribution NY NPT
 Steud.

1823. Scirpus glaucus Torr. *nom. illeg.
1841. Eleocharis palustris  var. australis  Nees
1843. Eleocharis calva Torr.
1848. Eleocharis palustris  var. calva  (Torr.) A.Gray
1855. Eleocharis erythropoda Steud.
1920. Trichophyllum palustre  var. calvum  (Torr.) House
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, CoC: 4,
Secure

OBL

Perennial,
Graminoid

NYFA: 5

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(Willd.) Schult.
var. tenuis

1809. Scirpus tenuis Willd.
1824. E. tenuis (Willd.) Schult.
 auct. E. ellipticanon Kunth
 auct. E. Capitatanon (L.) R. Br.
Slender spike-rush,
Dog’s hair
Éléocharide grêle
Native, CoC: 4,
Secure

Perennial,
Graminoid

NYFA: 5

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(Willd.) Schult.
var. pseudoptera
(Weath.) Svenson

1932. E. capitatavar. pseudoptera
1939. E. tenuisvar. pseudoptera
1972. E. ellipticavar. pseudoptera
Slender spikerush,
Slender spike-rush
Éléocharide à tige ailée
Native, CoC: 4,
Endangered,
NYNHP: 1[1]

Perennial,
Graminoid

NYFA: 1

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 Kunth

1837. E. elliptica Kunth
1932. E. capitatavar. borealis
1932. E. compressavar. atrata
1952. E. tenuisvar. borealis
1960. E. compressavar. borealis
Elliptic spike-rush,
Elliptic spikerush,
Slender spike-rush
Éléocharide elliptique
Native, CoC: 5,
Secure

Perennial,
Graminoid

NYFA: 5

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(L.) Roem. & Schult.

1753. Scirpus palustris L.
1817. E. palustris
(L.) Roem. & Schult.
    E. smallii Britton
    E. calvavar. australis
Common spike-rush,
Creeping spike-rush,
Marsh spike-rush
Éléocharide des marais
Native, CoC: 5,
Secure

OBL

Perennial,
Graminoid

NYFA: 5

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(Link) Schult.
var. halophila

    
    
    
Salt-marsh spike-rush
Éléocharide unigume
Native, CoC: 8,
Threatened,
NYNHP: 2[2]

OBL

Perennial,
Graminoid

NYFA: 2

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Sull.
var. compressa

1842. E. compressa Sull.
    E. ellipticavar. compressa
    E. ellipticavar. atrata
Flatstem spikerush,
Flat-stemmed spike-rush
Éléocharide comprimée
Native, CoC: 9,
Unranked

Perennial,
Graminoid

NYFA: U

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 Torr.

    
    
    
Three-ribbed spike-rush,
Three-angled spike-rush
Native, CoC: 10,
Endangered,
NYNHP: 1[3]

OBL-FACW

Perennial,
Graminoid

NYFA: 1

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Fernald

1922. E. fallax Weath. p.p.
1935. E. ambigens Fernald
Ambiguous spikerush,
Obscure spikerush,
Creeping spikerush
Éléocharide ambiquë
Native, CoC: 10,
Endangered

OBL

Perennial,
Graminoid

NYFA: 1

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Genus Eleocharisser. Eleocharis (excluded taxa) Spikerush N.Y. Status Images Distribution NY NPT
Weath.

1922. E. fallax Weath.
1935. E. ambigens Fernald
    
    
Creeping spikerush N. America native,
N.Y. excluded

OBL

Perennial,
Graminoid

NYFA-Excluded

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Eleocharis subg. Eleocharis sect. Eleocharis ser. Tenuissimae[edit | edit source]
Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Eleocharis sect. Eleocharis
Genus Eleocharisser. Tenuissimae Spikerush / Spikesedge N.Y. Status Images Distribution NY NPT
 Schult.

Intermediate spike-rush,
Matted spike-rush
Native, CoC: 8,
Likely secure

OBL-FACW

Perennial,
Graminoid

NYFA: 4

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Long-tubercled spike-rush Native, CoC: 10,
Threatened

OBL-FACW

Perennial,
Graminoid

NYFA: 2

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 (Link) Schult.

1820. Scirpus tortilis Link
1824. E. tortilis (Link) Schult.
 auct. E. simplexnon A.Dietr. 1832
Twisted spike-rush,
Twisted spike-sedge
Native, CoC: 10,
No recent reports

NYFA: Z

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 Torr.
var. filiculmis Torr.

Small-fruited spike-rush Native,
Unknown

NYFA: U

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Wikispecies
Eleocharis subg. Eleocharis sect. Eleocharis ser. Melanocarpae[edit | edit source]
Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Eleocharis sect. Eleocharis
Genus Eleocharisser. Melanocarpae Spikerush N.Y. Status Images Distribution NY NPT
 Torr.

1836. Eleocharis melanocarpa Torr.
1866. Scirpus melanocarpus
(Torr.) Griseb.
1891. Scirpus melanocarpus
(Torr.) Kuntze
Black-fruited spike-rush Native, CoC: 10,
Rare

FACW

Perennial,
Graminoid

NYFA: 3

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Eleocharis subg. Eleocharis sect. Eleocharis ser. Rostellatae[edit | edit source]
Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Eleocharis sect. Eleocharis
Genus Eleocharisser. Rostellatae Spikerush / Spikesedge N.Y. Status Images Distribution NY NPT
 (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

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Eleocharis subg. Eleocharis sect. Eleocharis ser. Albidae[edit | edit source]
Poales — Cyperaceae — Cyperoideae — Eleocharideae — Eleocharis subg. Eleocharis sect. Eleocharis
Genus Eleocharisser. Albidae (excluded taxa) Spikerush N.Y. Status Images Distribution NY NPT
Torr

1836. Eleocharis albida Torr.
    
    
White spikerush N. America native,
N.Y. excluded

NYFA-Excluded

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Tribe Abildgaardieae[edit | edit source]

Bulbostylis[edit | edit source]
Bulbostylis capillaris
Dense-tuft hair sedge (Bulbostylis capillaris) is a small annual sedge commonly found in disturbed, well-drained, sandy soil, often along roadsides.
Poales — Cyperaceae — Cyperoideae — Abildgaardieae — Bulbostylis
Genus BulbostylisKunth Hairsedge N.Y. Status Images Distribution NY NPT
(L.) Kunth ex C.B.Clarke

1753. Scirpus capillaris L.
1893. Fimbristylis capillaris (L.) A.Gray
1894. Stenophyllus capillaris (L.) Britton
Tufted hair sedge ...
Tufted hair-sedge ...
Densetuft hairsedge ...
Hair sedge ...
Native, CoC: 0,
Secure

FACU

Annual,
Graminoid

NYFA: 5
iNat

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Fimbristylis[edit | edit source]
Poales — Cyperaceae — Cyperoideae — Abildgaardieae — Fimbristylis
Genus FimbristylisVahl Fimbry N.Y. Status Images Distribution NY NPT
(L.) Roem. & Schult.

    Scirpus autumnalis L.
    F. autumnalis (L.) Roem. & Schult.
    F. geminata (Nees) Kunth
Autumn fimbry,
Slender fimbry
Native, CoC: 5,
Secure

OBL-FACW

Annual,
Graminoid

NYFA: 5

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(Michx.) Vahl

    Scirpus castaneus Michx.
    
    
Marsh fimbry Native, CoC: 10,
Threatened

OBL-FACW

Perennial,
Graminoid

NYFA: 2

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 (Michx.) Vahl
var. puberula

    
    Fimbristylis puberula (Michx.) Vahl
    
Hairy fimbry Native, CoC: 10,
Likely extirpated

OBL-FACW

Perennial,
Graminoid

NYFA: Z

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Genus Fimbristylis (excluded taxa) Fimbry N.Y. Status Images Distribution NY NPT
(Lam.) Fernald

1791. Scirpus carolinianus Lam.
1913. Fimbristylis harperi Britton
1940. Fimbristylis caroliniana Fernald
Carolina fimbry N. America native,
N.Y. excluded

NYFA-Excluded

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Tribe Bolboschoeneae[edit | edit source]

Tribe Bolboschoeneae (Tatanov) J. R. Starr
Bolboschoenus[edit | edit source]
Bolboschoenus fluviatilis
Bolboschoenus species are known as tuberous bulrushes or tuber-bulrushes. This genus has also been considered to be a section of Scirpus, which is similar but has spikelets that are usually smaller and more numerous.
Poales — Cyperaceae — Cyperoideae — Fuireneae — Bolboschoenus
Genus Bolboschoenus Tuberous bulrush N.Y. Status Images Distribution NY NPT
(Torr.) Soják

1836. Scirpus maritimusvar. fluviatilis
1856. Scirpus fluviatilis (Torr.) A.Gray
1972. B. fluviatilis (Torr.) Soják
1981. B. maritimusssp. fluviatilis
1993. Schoenoplectus fluviatilis
M.T.Strong
River bulrush,
River tuber-bulrush
Bolboschoenus fluviatile,
Scirpe fluviatile
Native, CoC: 4,
Secure

OBL

NYFA: 5

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(Pursh) Soják

    Scirpus robustus Pursh
    Schoenoplectus robustus
1972. B. robustus (Pursh) Soják
Sea-coast bulrush,
Saltmarsh bulrush,
Sturdy bulrush
Native, CoC: 9,
Vulnerable

OBL

NYFA: 3-4

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(L.) Palla
ssp. paludosus
(A.Nelson) T.Koyama

1899. Scirpus paludosus A.Nelson
1905. Scirpus pacificus Britton ex Parish
1926. Scirpus maritimusvar. paludosus
1971. Schoenoplectus maritimus
(L.) Lye
1980. B. maritimusssp. paludosus
American
  saltmarsh bulrush,
Seaside bulrush,
Cosmopolitan bulrush,
Prairie bulrush
Bolboschoenus
    des marais salés,
Scirpe des marais salés
Native, CoC: 8,
Threatened

OBL

NYFA: 2

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(L.) Palla
ssp. maritimus

    
    
    
European
  saltmarsh bulrush
Introduced,
Unk. naturalization

OBL

NYFA: Xu

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(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, CoC: 10,
Endangered

OBL

NYFA: 1

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(Lam.) S.G.Sm.

1791. Scirpus glaucus Lam.
1834. Scirpus maritimusvar. glaucus
1995. B. glaucus (Lam.) S.G.Sm.
1999. Schoenoplectus glaucus
(Lam.) Kartesz
 auct. Scirpus tuberosusnon Desf.
Tuberous bulrush Introduced,
Unk. naturalization

OBL

NYFA: X

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Tribe Fuireneae[edit | edit source]

Fuirena[edit | edit source]
Poales — Cyperaceae — Cyperoideae — Fuireneae — Fuirena
Genus FuirenaRottb. Umbrella-sedge N.Y. Status Images Distribution NY NPT
 (Torr.) Spreng.

1824. Fuirena squarrosa  var. pumila  Torr.
1825. Fuirena pumila (Torr.) Spreng.
1833. Fuirena torreyana L.C.Beck
1890. Fuirena simplex  var. pumila  (Torr.) C.B. Clarke ex Coville
Dwarf umbrella-sedge ...
Dwarf umbrella-grass ...
Native, CoC: 10,
Rare,
S2, G4

OBL

Annual,
Graminoid
Orange, Suffolk
NYFA: 3

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 Michx.

1803. Fuirena squarrosa Michx.
1821. Fuirena hispida Elliott
1860. Fuirena squarrosa  var. hispida  (Elliott) Chapm.
Hairy umbrella-sedge Native, CoC: 10,
Likely extirpated,
SX

OBL,
Graminoid
Long Island (no county)
NYFA: U[1]

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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.

Tribe Schoenoplecteae[edit | edit source]

Schoenoplectus[edit | edit source]

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
Genus Schoenoplectussect. Schoenoplectus Bulrush N.Y. Status Images Distribution NY NPT
(Vahl) Palla
var. pungens

    Scirpus pungens Vahl
1888. Sch. pungens (Vahl) Palla
    Scirpus americanusvar. polyphyllus
    Scirpus pungensvar. polyphyllus
 auct. Scirpus americanusnon Pers.
Three-square bulrush,
Common three-square
 bulrush,
Chair-maker’s rush,
Sharp club-rush,
Scirpe acere
Native,
Secure

NYFA: 5

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(Pers.) Volkart ex Schinz & R.Keller (1905)

    Scirpus americanus Persoon
    Scirpus olneyi A.Gray
    Scirpus pungensvar. longisetus
    Scirpus pungensssp. monophyllus
    
Three-square bulrush,
Olney’s three-square
 bulrush,
Chairmaker's bulrush,
American bulrush
Native,
Secure

NYFA: 5

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(Muhl. ex Bigelow) Á.Löve & D.Löve (1954)
var. acutus

    Scirpus acutus
    Schoenoplectus lacustrisssp. acutus
    
Hardstem bulrush,
Hard-stemmed bulrush,
Scirpe aigu
Native,
Secure

NYFA: 5

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(Gmel.) Palla

Softstem bulrush,
Soft-stemmed bulrush,
Great bulrush
Scirpe des étangs
Native,
Secure

NYFA: 5

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(Chase) Soják

Slender bulrush Native, CoC: 9,
Endangered

NYFA: 2

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(T. Koyama) Soják
[ acutus × heterochaetus ]

Oblong bulrush Native,
Unranked

NYFA: U

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S. acutus × tabernaemontani

Bulrush Native,
Unranked

NYFA: U

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Genus Schoenoplectussect. Malacogeton Bulrush N.Y. Status Images Distribution NY NPT
(Torr.) Soják

Water bulrush Native, CoC: 10,
Secure

NYFA: 5u

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(Olney) Palla

Torrey's bulrush,
Torrey’s three-square
 bulrush
Native, CoC: 10,
Threatened

OBL

NYFA: 2

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Tribe Pseudoschoeneae[edit | edit source]

Tribe Pseudoschoeneae contains the genus Schoenoplectiella.[1]
Schoenoplectiella[edit | edit source]
Schoenoplectiella purshiana
Schoenoplectiella (bulrush) has been separated from Schoenoplectus and Scirpus due to phylogenetic differences. In New York State, this comprises the annual, cespitose bulrush species.[1]
  1. MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. February 23, 2021. https://michiganflora.net/genus.aspx?id=Schoenoplectiella.
Poales — Cyperaceae — Cyperoideae — Fuireneae — Schoenoplectiella
Genus Schoenoplectiella Bulrush N.Y. Status Images Distribution NY NPT
(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, CoC: 6,
Likely secure

OBL

Annual,
Graminoid

NYFA: UN

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(A. Gray) Hayasaka
var. smithii

    Schoenoplectiella smithiiin…
    Scirpus smithii  var. smithii  {{{5}}}
    Schoenoplectus smithii  var. smithii  {{{5}}}
Smith’s bulrush ...

Native, CoC: 10,
Rare

OBL

Annual,
Graminoid

NYFA: 4
iNat

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(A. Gray) Hayasaka
var. setosa (Fernald) Hayasaka

    Scirpus smithii  var. setosus  Fernald
    Schoenoplectus smithii
var. setosus (Fernald) S.G. Sm.
    Schoenoplectiella smithii
var. setosa (Fernald) Hayasaka
Smith’s bristly bulrush ...

Native, CoC: 10,
Endangered

OBL

Annual,
Graminoid

NYFA: 1
iNat

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(L.) J. Jung & H.K. Choi

1753. Scirpus mucronatus L.
1888. Schoenoplectus mucronatusin…
2010. Schoenoplectiella mucronatain…
Bog bulrush ...
Ricefield bulrush ...
Roughseed bulrush ...

Introduced from
 Eurasia,
 northern Africa,
 Australia,
Highly invasive,
Naturalized,
NTS Tier 2[1]

OBL

Perennial,
Graminoid

NYFA: Xn

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Tribe Cypereae[edit | edit source]

Cyperus[edit | edit source]
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[edit | edit source]
Poales — Cyperaceae — Cyperoideae — Cypereae — Cyperus subg. Cyperus[1]
Genus Cyperussubg. Cyperussect. Neohemicarpha Dwarf bulrush N.Y. Status Images Distribution NY NPT
 (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

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Cyperus subg. Diclidium[edit | edit source]
Poales — Cyperaceae — Cyperoideae — Cypereae — Cyperus subg. Diclidium[1]
Genus Cyperus Flatsedge N.Y. Status Images Distribution NY NPT
 L.

Fragrant flatsedge,
Rusty flatsedge
Native,
Vulnerable

NYFA: 3

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Cyperus subg. Juncellus[edit | edit source]
Poales — Cyperaceae — Cyperoideae — Cypereae — Cyperus subg. Cyperus[1]
Genus Cyperussubg. Juncellus Flatsedge N.Y. Status Images Distribution NY NPT
 L.

False yellow nut sedge,
Straw-colored flatsedge,
False nutsedge
Native, CoC: 3,
Secure

FACW

Perennial,
Graminoid

NYFA: 5

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 L.

Awned flatsedge,
Awned cyperus,
Bearded flatsedge,
Bearded flat sedge
Native, CoC: 2,
Secure

OBL-FACW

Annual,
Graminoid

NYFA: 5

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(Spreng.) Marcks
ssp. macilentus (Fernald) Marcks

Eastern flatsedge,
Great Plains flatsedge
Native, CoC: 4,
Secure

Perennial,
Graminoid

NYFA: 5

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(Spreng.) Marcks
ssp. lupulinus

Great Plains flatsedge Native, CoC: 8,
Threatened

Perennial,
Graminoid

NYFA: 2

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 Muhl.

Redroot flatsedge Native, CoC: 6,
Vulnerable

NYFA: 3

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 Torr.

Gray's flatsedge Native, CoC: 8,
Vulnerable

NYFA: 3

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 Torr.

Houghton's flatsedge,
Houghton's umbrella-sedge
Native, CoC: 8,
Vulnerable

NYFA: 3

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Schweinitz's flatsedge Native, CoC: 7,
Rare
File:Botanical and vegetation survey of Carter County, Montana, Bureau of Land Management-administered lands (1998) (20207931773).jpg

NYFA: 2-3

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Globe flatsedge,
Teasel sedge
Native, CoC: 8,
Endangered

NYFA: 1

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 Chapm.

Reflexed flatsedge,
Cylindric sedge,
Pine barren flatsedge,
Retrorse flatsedge
Native, CoC: 7,
Endangered

NYFA: 1

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 Fernald

1945. Cyperus plukenetii Fernald
Plukenet's cyperus Native,
Likely extirpated

NYFA: Z

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 L.

Poorland flatsedge Introduced,
US South native

NYFA: X

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 L.
var. macrostachyus

Chufa flatsedge,
Yellow nut-grass,
Yellow nutsedge
Native, CoC: 1,
Unranked

NYFA: X

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 L.
var. leptostachyus

Chufa flatsedge,
Yellow nut-grass,
Yellow nutsedge
Native, CoC: 1,
Unranked

NYFA: U

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 L.

Ricefield flatsedge Introduced

NYFA: X

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 Steud.

    Cyperus microiria Steud.
 auct. Cyperus amuricus
    
Asian flatsedge Introduced,
Naturalized

NYFA: X

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Purple flatsedge,
Purple nut-sedge,
Coco-grass
Introduced,
Impersistent

NYFA:

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Genus Cyperussubg. Cyperus (excluded taxa) Flatsedge N.Y. Status Images Distribution NY NPT
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-Excluded

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1855. Cyperus microiria
Steud. (correct NY sp.)
1859. Cyperus amuricus
Maxim. (misapplied)
    
Asian flatsedge Introduced,
N.Y. excluded

NYFA-Excluded

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Cyperus subg. Kyllinga[edit | edit source]
Poales — Cyperaceae — Cyperoideae — Cypereae — Kyllinga
Genus Cyperussubg. Kyllinga Spikesedge N.Y. Status Images Distribution NY NPT
Thieret & Delahouss.

1844. Cyperus brevifolusin…
1866. Kyllinga gracillima Miq.
1956. Cyperus brevifolus  var. leiolepis  (Franch. & Savigny) T. Koyama
1967. Cyperus brevifolioidesin…
1987. Kyllinga brevifolioidesin…
Asiatic greenhead sedge,
Pasture spikesedge
Introduced,
Rare

NYFA: X

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(Salzm. ex Schltdl.) Dorr

1803. Kyllinga pumila Michx.
1849. K. hortensis Salzm. pro syn.
1855. K. tenuifolia Steud.
1936. Cyperus densicaespitosusin…
1944. C. tenuifolius (Steud.) Dandy
2014. C. hortensisin…
Annual greenhead sedge,
Low spikesedge
Introduced,
N. America native,
Rare

NYFA: X

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Cyperus subg. Pycnostachys[edit | edit source]
Cyperus dentatus
Cyperus subg. Pycnostachys contains about 150 species worldwide, with about 22 found in North America.[1] Of these, only Cyperus dentatus is considered native to New York State.
Poales — Cyperaceae — Cyperoideae — Cypereae — Cyperus subg. Pycnostachys
Genus Cyperus Flatsedge N.Y. Status Images Distribution NY NPT
Torr.

    Cyperus dentatus Torr.
Toothed sedge,
Toothed flat sedge
Native, CoC: 8,
Likely secure,
S4, G4

OBL-FACW

Perennial,
Graminoid

NYFA: 3
iNat

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Torr. & Hook.

    Cyperus acuminatus Torr. & Hook.
Taper-tipped flatsedge,
Tapertip flatsedge,
Short-point flatsedge
Introduced,
N. America native
NYFA: 2 counties
iNat: no observations
NYFA: X
iNat

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L.

1753. Cyperus difformis L.
Variable flatsedge Introduced,
Moderately invasive,
 NYIS: 52%[1]
NYFA: Queens (2012), Suffolk (2012)
iNat: Richmond (2015-19)
NYFA: Xn
iNat

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Rottb.

 auct. C. alternifoliusnon L.
    C. alternifoliusssp. flabelliformis
    C. flabelliformis Rottb.
Alternate-leaved flatsedge,
Umbrella-plant,
Umbrella papyrus
Introduced,
Not naturalized,
Impersistent,
Cutivated
Bronx (1948)
NYFA: X
iNat

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Cyperus subg. Pycreus[edit | edit source]
Poales — Cyperaceae — Cyperoideae — Cypereae — Cyperus subg. Pycreus
Genus Cyperussubg. Pycreus Flatsedge N.Y. Status Images Distribution NY NPT
 Torr.

1836. Cyperus bipartitus Torr.
1837. Cyperus rivularis Kunth
1907. Pycreus rivularis (Kunth) Palla
1908. Pycreus bipartitus (Torr.) C.B.Clarke
1958. Cyperus nigervar. rivularis
Slender flatsedge,
Shining flatsedge
Souchet des rivières,
Souchet bipartite
Native,
Secure

FACW

Annual,
Graminoid

NYFA: 5

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 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?

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 Vahl

1805. Cyperus filicinus Vahl
1868. C. polystachyosvar. macrostachyos
    
Fern flatsedge Native,
Rare

OBL

Annual-perennial,
Graminoid

NYFA: 3?

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 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

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 L.

1753. Cyperus flavescens L.
1814. Cyperus poiformis Pursh
1830. Pycreus flavescens (L.) Rchb.
1939. Cyperus flavescensvar. poiformis
Yellow flatsedge,
Yellow flat sedge,
Annual yellow flatsedge,
Pale flatsedge
Souchet jaunâtre
Native,
Endangered

OBL

Annual,
Graminoid

NYFA: 1

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 Michx.

1803. Cyperus flavicomus Michx.
    
    
White-edged flat sedge,
Whiteedge flatsedge
Introduced from
 southern US,
Impersistent

FAC

Annual,
Graminoid

NYFA: Xm

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Genus Scirpoides[edit | edit source]
Poales — Cyperaceae — Cyperoideae — Cypereae — Scirpoides
Genus Scirpoides (excluded taxa) Bulrush N.Y. Status Images Distribution NPT
 (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-Excluded

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