• Source: Viola praemorsa

Viola praemorsa is a species of violet known by the common names canary violet, Astoria violet, yellow montane violet, and upland yellow violet.




Description


This rhizomatous perennial herb grows up to 30 centimeters in maximum height. The thick, fleshy leaf blades are lance-shaped to oval with pointed or rounded tips, the basal ones up to 8.5 centimeters long and those higher on the stem the same or slightly longer. The leaf blades are often coated densely in hairs and are borne on long petioles. A solitary flower is borne on a long, upright stem. It has five yellow petals, the lowest three veined with brownish purple, and the upper two often with brownish purple coloring on the outer surfaces.




Taxonomy


There are three subspecies:

Viola praemorsa subsp. praemorsa (Dougl. ex Lindl) – occurs in British Columbia, California, Montana, Oregon, and Washington.
Viola praemorsa subsp. flavovirens (Pollard) Fabijan – occurs in Idaho, Montana, Utah, Washington, and Wyoming.
Viola praemorsa subsp. linguaefolia (Nutt.) M.S. Baker & J.C. Clausen ex M.E. Peck – occurs in Alberta, California, Colorado, Montana, Nevada, Oregon, Utah, Washington, and Wyoming.




Distribution and habitat


Viola praemorsa is native to western North America from British Columbia and Alberta in Canada; to Washington, Oregon, Idaho, Montana, Wyoming, Utah, California, Nevada, and Colorado in the U.S. It occurs on mountain slopes, usually where forests or grassy meadows are present, in moist or dry soil. In California, it often occurs in yellow-pine forests. In Canada, where it is an endangered species, V. praemorsa subsp. praemorsa is associated with Garry oak ecosystems.




References






External links


Washington Burke Museum
Photo gallery

Kata Kunci Pencarian:

• Sukma
• Daftar tumbuhan endemik di Balkan
• Viola praemorsa
• List of Viola species
• Viola (plant)
• List of Wildlife Species at Risk (Canada)
• List of Canadian plants by family U–W
• List of flora of Utah
• List of Violales of Montana
• List of flora of Ohio
• List of flora of Indiana
• List of Balkan endemic plants