New York Natural Heritage Program
Glomerate Sedge
Carex aggregata Mackenzie
Monocots
Carex aggregata line drawing Britton, N.L., and A. Brown (1913); 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: 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?
A different sedge species (Carex gravida) was reported from New York for many years but specimens formerly identified as such were determined to be misidentifications of C. aggregata and/or C. sparganioides. This led to the removal of C. gravida from the checklist of New York State plants.

State Ranking Justification [-]
There is only one known population within New York, however a subsequent survey to this site was not able to relocate this population. The original report indicates this was a very small population. This population needs further survey work. Fewer than five populations have ever been reported from New York which is at the northeastern edge of this sedge's range. Tony Reznicek, University of Michigan and Flora of North America Carex author, has seen and verified the identity of the only known New York population.

Short-term Trends [-]

Long-term Trends [-]