New York Natural Heritage Program
Richardson's Sedge
Carex richardsonii R. Br.
Carex richardsonii 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: 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?
Carex richardsonii is named in honor of its discoverer, Sir John Richardson who was alive from 1787 to 1863 (Fernald 1970).

State Ranking Justification [-]
There is only a single specimen of Carex richardsonii from New York. This was collected in the late 1800 from a site "eleven miles west of Rochester in the town of Greece." Despite multiple surveys, this site has not been relocated. While the only known site is probably extirpated, this sedge may be present in the alvar region near the eastern shore of Lake Ontario.

Short-term Trends [-]

Long-term Trends [-]