New York Natural Heritage Program
Southern Blue Flag
Iris virginica var. shrevei (Small) E. Anders.
Kimberly J. Smith
Family: Iris Family (Iridaceae)

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?
This variety of Iris virginica was named for Ralph Shreve, a horticulturist and surveyor who grew and sold irises and other Ozark wildflowers from his farm in Farmington, Arkansas (Shreve 1927, Fernald 1970). This variety was first discovered in New York in 1998.

State Ranking Justification [-]
There are three existing populations along the Niagara River and one historical population near Sodus Bay.

Short-term Trends [-]

Long-term Trends [-]