New York Natural Heritage Program
Veiny Meadow-rue
Thalictrum venulosum var. confine (Fern.) Boivin
Dicots
Thalictrum venulosum Stephen M. Young
Family: Buttercup Family (Ranunculaceae)

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: G5T4?Q
A Global Rarity Rank of G5T4?Q means: Apparently Secure globally (most likely) - Conservation status of the subspecies/variety is uncertain, but most likely is uncommon in the world but not rare; usually widespread, but may be rare in some parts of its range; possibly some cause for long-term concern due to declines or other factors. More information is needed to assign a firm conservation status. (The species as a whole is common globally.) The Q indicates this subspecies? or variety's status as a distinctive taxonomic entitity is uncertain.


Did you know?
Veiny Meadow-rue's flowers have no petals. The distinctive "starburst" pattern of its flowers are made by elongated stamens (Gleason and Cronquist 1991).

State Ranking Justification [-]
There are only 5 existing occurrences and 2 historical occurrences (both from Clinton County) in the state. Only two of the verified occurrences are ranked as "good" and have populations of more than 50 plants, and the undisturbed shoreline habitat it favors has been impacted in many areas.

Short-term Trends [-]

Long-term Trends [-]