New York Natural Heritage Program
Early Frostweed
Crocanthemum propinquum (Bickn.) Bickn.
Dicots
Family: Rock-Rose Family (Cistaceae)

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: G4
A Global Rarity Rank of G4 means: This species is apparently secure globally (typically with more than 100+ populations), though it may be quite rare in parts of its range, especially at the periphery.


Did you know?
In his 1981 publication Rare Plants of New York State, Richard Mitchell regarded this plant as extirpated in New York since it had not been seen since 1925. Natural Heritage survey work by Bob Zaremba in the mid-1980s confirmed that this plant was still present at Hempstead, Long Island, and at seven more sites east to Montauk.

State Ranking Justification [-]
There are six existing populations, but additional surveys are needed to evaluate their current status. This species has not been widely targeted for surveys, so more populations should be found. There are 10 historical occurrences, but many of these are considered extirpated from western Long Island.

Short-term Trends [-]

Long-term Trends [-]