New York Natural Heritage Program
Northern Clustered Sedge
Carex arcta Boott
Carex arcta scales, perigynia, achenes Hurd et. al (1998); downloaded from USDA-Plants Database
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: 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 means "contracted" and refers to the spikelets that are all clustered at the top of the stem.

State Ranking Justification [-]
There is only one known occurrence and less than ten total populations reported across a very broad range of the state. This sedge may be overlooked as its habitat is very common. New York is at the southern limit of its range, so that may account for the limited number of populations reported. Future surveys should focus on the Adirondacks, Tug Hill Plateau, and Allegany Reservoir area. The southern Hudson Valley record needs to be verified.

Short-term Trends [-]

Long-term Trends [-]