New York Natural Heritage Program
Slender Spikerush
Eleocharis tenuis var. pseudoptera (Weatherby ex Svens.) Svens.
Monocots
Eleocharis_tenuis_var._pseudoptera spikelets Richard M. Ring -- Courtesy of the William and Lynda Steere Herbarium of The New York Botanical Garden
Family: Sedge Family (Cyperaceae)

State Protection: Endangered
listed species are those with: 1) 5 or fewer extant sites, or 2) fewer than 1,000 individuals, or 3) restricted to fewer than 4 U.S.G.S. 7 minute topographical maps, or 4) species listed as endangered by U.S. Department of Interior.

Federal Protection: Not Listed

State Rarity Rank: S1
A State Rarity Rank of S1 means: This plant is endangered/critically imperiled in New York because of extreme rarity (typically 5 or fewer populations or very few remaining individuals) or is extremely vulnerable to extirpation from New York due to biological factors.

Global Rarity Rank: G5T5?
A Global Rarity Rank of G5T5? means: Secure globally (most likely) - Conservation status of the subspecies/variety is uncertain, but is most likely common in the world; widespread and abundant (but may be rare in some parts of its range). More information is needed to assign a firm conservation status. (The species as a whole is common globally.)


Did you know?
In Quebec this species is known as winged-stem spike-rush because the stems are deeply grooved and thus " falsely winged" (the meaning of pseudoptera) (Flora of North America Editorial Committee 2002).










State Ranking Justification [-]
There are five existing populations, most of them of good quality and in protected areas. There are 12 records from the late 1800s through 1974 that have not been rechecked.

Short-term Trends [-]

Long-term Trends [-]