Viola adunca
Sm.
Blue violet, Dog violet, Hookedspur violet, Western dog violet
Viola adunca is a perennial herb that is native to California, and also found elsewhere in North America and beyond.
Bloom Period
The blue points on the map indicate observations in Calflora.
Click on the map to view observations within a specific county.
Click on the map to view observations within a specific county.
Jepson eFlora section:
eudicot
USDA PLANTS group:
Dicot
Equally likely to occur in wetlands and non wetlands
streambanks, meadows
Redwood Forest, Yellow Pine Forest, Red Fir Forest, Lodgepole Forest, Subalpine Forest, Mixed Evergreen Forest, Alpine Fell-fields, wetland-riparian
California's Coastal Prairies - Ecology. Sonoma State University: Viola adunca is the larval host plant of the endangered Myrtle’s silverspot butterfly (Speyeria zerene myrtleae ). ... survival of the butterfly ... is linked to the continued persistence of this violet.
Speyeria zerene myrtleae: XERCES SOCIETY: Formerly widespread on the San Francisco and Marin peninsulas, ... is now only known from four populations in northwestern Marin County and southwestern Sonoma County.
Speyeria zerene myrtleae: Essig Museum of Entomology: The eggs are laid only on species of Viola, possibly only Viola adunca.
