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Viola pedunculata is a perennial, growing from a spongy rhizome. The plant is often low-growing, but can reach a height of 6 inches (15 cm). The leaves are 1–5.5 centimetres (0.39–2.17 in) long, cordate (heart-shaped) to deltate-ovate (oblong-triangular), scalloped or toothed, and glabrous or hairy. [4] They are summer deciduous.
Viola sempervirens, known by the common names redwood violet and evergreen violet, is a species in the genus Viola. It is native to the West Coast of the United States and British Columbia, Canada, and grows in closed-cone pine forest, California mixed evergreen forest, redwood forest, and Douglas fir forest communities. It has leathery purple ...
Viola odorata spreads with stolons (above-ground shoots). The plant reaches 15 centimetres (6 in) in height. [3] The leaves and flowers are all in a basal rosette, and the leaf stalks have downward-pointing hairs. The leaves are kidney-shaped and reach 6 cm (2 + 1 ⁄ 2 in) long. [3] The flowers are normally either dark violet or white and are ...
Of California's total plant population, 2,153 species, subspecies, and varieties are endemic and native to California alone, according to the 1993 Jepson Manual study. [4] This botanical diversity stems not only from the size of the state, but also its diverse topographies , climates, and soils (e.g. serpentine outcrops ).
U.S. universities and industry applied the same science to bedding plants and potted flowering plants at the same time. This research developed environmental control practices, structures and equipment to optimize bedding plant production over the last 50 years. Plant breeders and plant collectors added new taxa annually to foster industry growth.
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. [3] It occurs on mountain slopes, usually where forests or grassy meadows are present, in moist or dry soil. [4]
Viola glabella is a perennial herb, growing to 0.1 m (0 ft 4in) by 0.2 m (0 ft 8in) and blooming from April to July. The plant is deciduous and dies back completely to its roots during Autumn. Viola glabella prefers moist, well-drained soil and can grow in part shade.
Viola douglasii is a species of violet known by the common name Douglas' violet, or Douglas' golden violet. [3] It is native to western North America from Oregon through California and into Baja California , where it grows in seasonally moist habitat, often on serpentine soils . [ 4 ]
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