New York Natural Heritage Program
Small White Snakeroot
Ageratina aromatica var. aromatica
Dicots
Flower heads Stephen M. Young
Family: Aster Family (Asteraceae)

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: 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?
Even though the species name is aromatica, the leaves and flowers do not have much of a fragrance. The genus name comes from the Greek word "Agera" which means not growing old and refers to the long-lasting flowers and leaves (Tenaglia 2007).

State Ranking Justification [-]
There are four existing occurrences but two of them have not been found again after one survey. There are 29 historical occurrences beginning in 1868 on Staten Island. Almost all of the historical collections occur between 1868 and 1929 with none later than 1936. Plants were rediscovered in 1991.

Short-term Trends [-]

Long-term Trends [-]