New York Natural Heritage Program
Northern Bentgrass
Agrostis mertensii Trin.
Monocots
Agrostis mertensii on Noonmark Mountain. Tim Howard
Family: Grass Family (Poaceae)

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 specific name mertensii was given to this species in honor of the botanist Franz Carl Mertens (1764-1831), five years after his death.

State Ranking Justification [-]
There are 10 known extant populations. There are also three historical populations which have not been seen since at least 1961. One of these historical populations was searched for without success but further survey work is needed at this and the other historical populations before their status can be accurately determined. All of the populations occur in very limited alpine habitat on the higher mountains of the high peaks region of the Adirondacks.

Short-term Trends [-]

Long-term Trends [-]