New York Natural Heritage Program
Canadian Single-spike Sedge
Carex scirpoidea ssp. scirpoidea
Monocots
Carex scirpoidea Stephen M. Young
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: G5T5
A Global Rarity Rank of G5T5 means: Secure globally - Both the species as a whole and the subspecies/variety are common in the world; widespread and abundant (but may be rare in some parts of its range).


Did you know?
The specific epithet scirpoidea means like Scirpus, which is a different genus of sedges. It is unclear what member of the genus Scirpus, Carex scirpoidea resembles. Some members of the genera Eleocharis and Trichophurm which have at times been placed in the genus Scirpus, have a superficial similarity to Carex scirpoidea.

State Ranking Justification [-]
There are six known populations, but two are quite small. Most of these populations are subject to various types of recreational impacts, but mainly trampling from hikers. There are only two historical sites that need further follow-up with additional habitat elsewhere within the Adirondacks. Within eastern North America, New York is this species' southern limit.

Short-term Trends [-]

Long-term Trends [-]