New York Natural Heritage Program
Slender Marsh Bluegrass
Poa paludigena Fern. & Wieg.
Poa paludigena line drawing Britton, N.L., and A. Brown (1913); downloaded from USDA-Plants Database
Family: Grass Family (Poaceae)

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: G3
A Global Rarity Rank of G3 means: This species is either rare and local throughout its range (21 to 100 occurrences), or found locally (even abundantly at some of its locations) in a restricted range (e.g. a single physiographic region), or is vulnerable to extinction throughout its range because of other factors.

Did you know?
Despite its broad distribution, this grass is considered globally rare since so few populations are known. The epithet paludigena refers to its habitat preference as it means "born of the marsh."

State Ranking Justification [-]
There are five known populations and 13 historical populations. All of these known populations are quite small and in wetland habitats that may be susceptible to run-off or invasive species. With a somewhat specific habitat type (open to slightly wooded calcareous wetlands), there is a limited amount of available habitat. This plant has likely always been rare in New York.

Short-term Trends [-]

Long-term Trends [-]