New York Natural Heritage Program
Black-edge Sedge
Carex nigromarginata Schwein.
Monocots
Carex nigromarginata line drawing Britton, N.L., and A. Brown (1913); downloaded from USDA-Plants Database.
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?
Just a few years ago, this sedge was considered historical within New York (i.e. not seen in at least 20 years). David Werier rediscovered this sedge and he and others have been finding more populations. As more people learn to identify this plant, more populations will likely be encountered.

State Ranking Justification [-]
There are eight existing populations and about 10 historical populations but more of this species are likely to be found in the Hudson Highlands if surveys are done early enough to identify the species before it sheds its perigynia.

Short-term Trends [-]

Long-term Trends [-]