New York Natural Heritage Program
Velvet Panic Grass
Dichanthelium scoparium (Lam.) Gould
Monocots
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: 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 name for the genus comes from the Greek words meaning two-flowering, and refers to the 2 flowering periods of these grasses, once on the primary stalk in the spring and again on the branches in late summer (Flora North America Editors 2003). The species name means broom-like (Fernald 1950). This species is in the section Clandestina with two other related species, Dichanthelium clandestinum, the common deer-tongue grass, and the New York rare grass Dichanthelium scabriusculum.

State Ranking Justification [-]
There is one existing population on Staten Island however it has been suppressed by woody succession in the last 20 years and may only survive in the seed bank waiting for the right disturbance. There are five historical populations from the early 1900s through the 1950s which have not been rediscovered although habitat still exists. There are two populations that are now considered extirpated because their habitat has been developed.

Short-term Trends [-]

Long-term Trends [-]