New York Natural Heritage Program
Side-oats Grama
Bouteloua curtipendula var. curtipendula
Monocots
Bouteloua curtipendula spikelets Troy Weldy
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: G5T5
A Global Rarity Rank of G5T5 means: Secure globally - Both the species as a whole and the subspecies/variety are common in the world; widespread and abundant (but may be rare in some parts of its range).


Did you know?
Side-oats grama is a very widespread and common grass west of New York but only occurs here in fewer than ten places. Many of them are close to or along current or historical railroad lines. It is one of the most beautiful and easy-to-recognize grasses in New York.

State Ranking Justification [-]
There are eight existing populations, half of them good or excellent. The other half are small or under threat. There are about 10 historical populations and most of those are probably extirpated.

Short-term Trends [-]

Long-term Trends [-]