New York Natural Heritage Program
White Milkweed
Asclepias variegata L.
Dicots
New leaves Stephen M. Young
Family: Milkweed Family (Asclepiadaceae)

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?
In John Torrey's Flora of New York of 1843, he reported this species as "rather common" on Long Island and Manhattan. Much of its former habitat has now been developed and fewer than 50 plants now cling to survival in eastern Long Island.

State Ranking Justification [-]
There are four existing populations but they are all very small and in danger of extirpation. There are 10 populations known from the late 1800s and early 1900s through 1961 that have not been resurveyed. There is one old population that was resurveyed but not found and five populations around New York City that are considered extirpated.

Short-term Trends [-]

Long-term Trends [-]