Viola biflora Description. Illustrations: 3 photographs of Viola biflora and 2 drawings. Viola biflora is a member of section Chamaemelanium, subsection Biflorae, a group of several geographically separated races distributed on high mountain ranges around the North Pole. Viola biflora migrated from Eurasia across the Bering land bridge to western North America where it is…
Category: Flower colour
Viola aurea (V. purpurea ssp aurea)
Viola aurea No description. 3 photographs of Viola aurea.
Viola sheltonii Torrey.
Viola sheltonii Description. Illustrations: 6 photographs of Viola sheltonii and 2 drawings. Two separate montane populations of V. sheltonii exist: one west from the Sierra Nevada Mountains of California, Oregon and Washington states, the other in the Rocky Mountains, from Montana to southwestern Colorado. Half of the plant remains underground, so that the crown of the…
Viola trinervata (Howell) Howell ex A.Gray
Viola trinervata Description. Illustrations: 3 photographs of Viola trinervata and 2 drawings. This violet species is named for the three prominent veins easily visible on the erect glaucous leaves. It is found in the lithosol soils of central Washington State and northern Oregon with a disjunct population in south eastern Oregon in the Great Basin….
Viola hallii A. Gray
Viola hallii Description. Illustrations: 3 photographs of Viola hallii and 2 drawings This rare violet species is classified in the subsection Chrysanthae, very closely related to V. beckwithii, however the plants of V. hallii are completely glabrous, the divided leaves are pale green and the flowers more rounded. Its two upper petals are dark…
Viola douglasii
Viola douglasii Steud. Description. Illustrations: 4 photographs of Viola douglasii and 2 drawings. This golden-flowered violet is usually found growing on serpentine, but is not abundant in any location. Its finely divided leaves are gray, very similar to those of V. beckwithii however V. douglasii can be distinguished because the dense pubescence is on both…
Viola scopulorum
Viola scopulorum Description. Illustrations: 2 photographs of Viola scopulorum and 2 drawings. Viola scopulorum (Boulder Co, CO. May 1995) A diploid species of subsection Canadenses, Viola scopulorum is tall, with rigid vertical stems, similar in height and general habit to V. canadensis. However the leaves, petioles and flowers are smaller, basal leaves are about half the…
Viola flettii
Viola flettii Piper Description. Illustrations: 3 photographs of Viola flettii and 2 drawings. During two periods of glaciation in the last Ice Age, 18,000 and 15,000 years ago, most of the Olympic Peninsula in Washington State was covered by extensive glaciers. However the tops of the higher peaks on the eastern edge of the peninsula…
Viola ocellata
Viola ocellata, Torr. & A. Gray Description. Illustrations: 3 photographs of Viola ocellata and 3 drawings. Viola ocellata is an attractive white-flowered violet species from the redwood belt in the Coast Ranges of northwestern California and southwestern Oregon. Its new heart-shaped leaves appear after the arrival of the late autumn rains, growing through the relatively…
Viola lithion
Viola lithion N. Holmgren & P. Holmgren Description. Illustrations: 4 photographs of Viola lithion and 2 drawings. Viola lithion is one of three violets discovered in the period from 1980-1990. Its existence is endangered because of the small size of the two known populations, though it is unlikely to be disturbed as the sites, at…