New York Natural Heritage Program
Mountain Watercress
Cardamine rotundifolia Michx.
Dicots
Cardamine rotundifolia Troy Weldy
Family: Mustard Family (Brassicaceae)

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: 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?
The leaves of mountain watercress can be eaten raw or cooked. They have a hot watercress-like flavor. Being that they are rare in New York, please don't eat our plants.

State Ranking Justification [-]
Currently there are only five populations known with a total of less than 1000 plants. Only four additional historical locations have ever been recorded. Trends are stable and threats are low but it is expected that this plant will always be rare in the state.

Short-term Trends [-]

Long-term Trends [-]