New York Natural Heritage Program
Four-flowered Loosestrife
Lysimachia quadriflora Sims
Dicots
Lysimachia quadriflora plant in fruit Stephen M. Young
Family: Primrose Family (Primulaceae)

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: Secure globally (most likely) - Conservation status is uncertain, but most likely common in the world; widespread and abundant (but may be rare in some parts of its range). More information is needed to assign a firm conservation status.


Did you know?
The presence of Lysimachia quadriflora in New York was first publishing in the Flora of New York by John Torrey in 1843. It has never been found in any other place in the state besides the shores of Lake Erie in Buffalo and the Niagara River.

State Ranking Justification [-]
There are two existing populations. One population has over 1000 plants and the second one is small and has not been seen since 2000. There are five historical populations from the Niagara River and Lake Erie shoreline from the late 1800s to 1942. These are probably extirpated.

Short-term Trends [-]

Long-term Trends [-]