New York Natural Heritage Program
Engelmann's Spikerush
Eleocharis engelmannii Steud.
Eleocharis engelmannii 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: 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 honors George Engelmann, 19th century German-born botanist, who became famous for his plant studies in the Rocky Mountains in northern Mexico and the discoverer of this species of spikerush. He was also the first to study American vines in detail and helped the French recover their wine industry by providing fungus-resistant grapevines from the United States (George Engelmann in Wikipedia, accessed 1 May 2009). This plant has only ever been found in a few scattered locations on Long Island and New York City area with one outlier at Kinderhook Lake in Columbia County. No sightings were made between 1946 in 1985 when it was rediscovered at Lake Ronkonkoma on Long Island.

State Ranking Justification [-]
There are only two existing populations with less than 50 plants each. One of them is in an area that is highly developed. There are 11 populations from the late 1800s and early 1900s but about half of these are gone because their habitat has been destroyed. Five of these populations need to be rechecked.

Short-term Trends [-]

Long-term Trends [-]