New York Natural Heritage Program
Nodding Wild Onion
Allium cernuum var. cernuum
Monocots
Stephen M. Young
Family: Lily Family (Liliaceae)

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: G5T5
A Global Rarity Rank of G5T5 means: Secure globally - Both the species as a whole and the subspecies/variety are common in the world; widespread and abundant (but may be rare in some parts of its range).


Did you know?
Nodding wild onion was first collected in New York in 1831 on the banks of Seneca Lake by Asa Gray's friend Nathan Folwell, a botanist from the town of Romulus, on the shores of Seneca Lake. Plants still survive along the lake today.

State Ranking Justification [-]
There are seven existing populations and most of them have over 100 plants each. There are 22 additional historical occurrences colleted from the 1880s to the 1950s.

Short-term Trends [-]

Long-term Trends [-]