New York Natural Heritage Program
Violet Wood-sorrel
Oxalis violacea L.
Dicots
Oxalis violacea Troy Weldy
Family: Wood-Sorrel Family (Oxalidaceae)

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: S2S3
A State Rarity Rank of S2S3 means: Imperiled or Vulnerable in New York - Very vulnerable to disappearing from New York, or vulnerable to becoming imperiled in New York, due to rarity or other factors; typically 6 to 80 populations or locations in New York, few individuals, restricted range, few remaining acres (or miles of stream), and/or recent and widespread declines. More information is needed to assign a single conservation status.

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?
A characteristic of many members of this genus is that they contain oxalic acid, giving the leaves and flowers a sour taste, refreshing to chew in small amounts. However, in large amounts, these species are toxic, and interfere with proper digestion. In the past, it was a practice to extract crystals of calcium oxalate for use in treating diseases and as a salt called "sal acetosella", or "sorrel salt" (Oxalis in Wikipedia accessed 16 November 2007).

State Ranking Justification [-]
There are 14 existing populations, and most of them contain hundreds of plants. A couple of populations contain over 1000 plants. There are 30 historical records but most of these are from areas of the Lower Hudson region and Long Island that have been developed. It is not expected that these historical occurrences would be relocated, but more populations could be found in mountainous areas that are not easily accessible.

Short-term Trends [-]

Long-term Trends [-]