New York Natural Heritage Program
Variable Sedge
Carex polymorpha Muhl.
Monocots
Carex polymorpha line drawing Britton, N.L., and A. Brown (1913); downloaded from USDA-Plants Database.
Family: Sedge Family (Cyperaceae)

State Protection: Not Listed
no state status.

Federal Protection: Not Listed

State Rarity Rank: SX
A State Rarity Rank of SX means: This plant is apparently extirpated from New York State, although we have rediscovered some species thought to be extirpated. All previously known populations have been searched and deemed extirpated.

Global Rarity Rank: G3
A Global Rarity Rank of G3 means: This species is either rare and local throughout its range (21 to 100 occurrences), or found locally (even abundantly at some of its locations) in a restricted range (e.g. a single physiographic region), or is vulnerable to extinction throughout its range because of other factors.


Did you know?
This species was considered for federal listing under the Endangered Species Act but was withdrawn when additional populations were found. Still, there are fewer than 45 extant populations in the world (Everett 2001).

State Ranking Justification [-]
There are no known populations within New York today, but there are ten historical sites. Extensive surveys of the Long Island locations have failed to locate this plant and habitat has been severely diminished through urbanization and other types of habitat alteration. With New York is located within the middle of this sedge's range, the liklihood of finding it within New York is pretty low.

Short-term Trends [-]

Long-term Trends [-]