New York Natural Heritage Program
Long-tubercled Spikerush
Eleocharis tuberculosa (Michx.) Roemer & J.A. Schultes
Monocots
Eleocharis tuberculosa spikelet Richard M. Ring -- Courtesy of the William and
Family: Sedge Family (Cyperaceae)

State Protection: Threatened
listed species are those with: 1) 6 to fewer than 20 extant sites, or 2) 1,000 to fewer than 3,000 individuals, or 3) restricted to not less than 4 or more than 7 U.S.G.S. 7 minute topographical maps, or 4) listed as threatened by U.S. Department of Interior.

Federal Protection: Not Listed

State Rarity Rank: S2
A State Rarity Rank of S2 means: This plant is threatened/imperiled in New York because of rarity (typically 6-20 populations or few remaining individuals) or is vulnerable to extirpation from New York due to biological factors.

Global Rarity Rank: G5
A Global Rarity Rank of G5 means: This species is demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.


Did you know?
The species name refers to the small projection on the top of the fruit, persistent in varying shapes on most spike-rushes. The word has the same meaning in the disease tuberculosis, which produces small nodules or tubercles in the lungs (Wikipedia contributors).

State Ranking Justification [-]
There are eight existing populations but only two of them have more than 100 plants. Less than 50 plants have been counted in each of the remaining six populations. There are 21 populations from the late 1800s through the 1960s but nine of these, mostly from western Long Island, are considered gone because their habitat has been destroyed. The other remaining records have not been rechecked.

Short-term Trends [-]

Long-term Trends [-]