New York Natural Heritage Program
Creeping Spikerush
Eleocharis ambigens Fern.
Eleocharis fallax Richard Ring
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: G4G5
A Global Rarity Rank of G4G5 means: Apparently or Demonstrably Secure globally - Uncommon to common in the world, but not rare; usually widespread, but may be rare in some parts of its range; possibly some cause for long-term concern due to declines or other factors. More information is needed to assign a single conservation status.

Did you know?
The species name fallax is Latin for deceitful or deceptive and its common name in some states is deceitful spike-rush. This refers to its close relationship to other similar species and the difficulty of telling them apart (Flora of North America Editorial Committee 2002). Another of its common names, creeping spike-rush, is also used for the more common Eleocharis palustris.

State Ranking Justification [-]
There are 2 existing very small populations which may be threatened by Phragmites and overuse of the surrounding wetlands. There are four occurrences from the early 1900s which have not been rediscovered.

Short-term Trends [-]

Long-term Trends [-]