New York Natural Heritage Program
Cut-leaved Evening-primrose
Oenothera laciniata Hill
David Smith, Delaware Wildflowers
Family: Evening-Primrose Family (Onagraceae)

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?
This plant is primarily known from the New York City and Long Island areas, but it may have hitched a ride north to Albany where it was collected at the Selkirk railroad yards in 1920. It has never been seen that far north again.

State Ranking Justification [-]
There are five existing populations in disturbed areas where their habitat changes from year to year. All of these populations are small and unstable. There are also 14 historical occurrences but many of these are located in human-disturbed areas like roadsides and along railroads where the plants may have been introduced.

Short-term Trends [-]

Long-term Trends [-]