New York Natural Heritage Program
Deer's Hair Sedge
Trichophorum cespitosum ssp. cespitosum
Monocots
Family: Sedge Family (Cyperaceae)

State Protection: Threatened
listed species are those with: 1) 6 to fewer than 20 extant sites, or 2) 1,000 to fewer than 3,000 individuals, or 3) restricted to not less than 4 or more than 7 U.S.G.S. 7 minute topographical maps, or 4) listed as threatened 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?
The species name cespitosum means tufted, and refers to the dense tussocks that this plant makes. This is the most common graminoid in New York's alpine ecosystem, and gives the meadows their distinctive "grassy" appearance. It turns a beautiful golden color in the fall.

State Ranking Justification [-]
There are currently 20 known populations. There are also two populations which have not been seen in over twenty years, but additional survey work is needed to determine their status. All but one of the known extant populations occurs in the high peaks region of the Adirondacks. The other extant population is disjunct in a fen in western New York. Almost all of the populations in the Adirondacks are threatened by trampling by hiker traffic but many are quite large.

Short-term Trends [-]

Long-term Trends [-]