New York Natural Heritage Program
Rattlebox
Crotalaria sagittalis L.
Dicots
Crotalaria sagittalis Stephen M. Young
Family: Pea Family (Fabaceae)

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 common name rattlebox comes from the genus name, which is derived from the Greek word "crotalon" meaning rattle (the genus for rattlesnake is Crotalus). When the fruits mature they become hardened and the seeds rattle around inside. The species is widespread in eastern United States and can be weedy. It is on the list of noxious weeds for Arkansas and even though there is plenty of weedy habitat in New York we are the northeastern edge of its range and there is some environmental factor limiting its spread.

State Ranking Justification [-]
Two large populations exist along with one small population. All are threatened by succession or habitat destruction. About 15 historical records exist but none have been relocated.

Short-term Trends [-]

Long-term Trends [-]