Viola beckwithii, known commonly as the Great Basin violet, Beckwith's violet, and sagebrush pansy, is a species of violet native to the western United States. It is an early-flowering plant of sagebrush habitats in the Great Basin region.
Boykinia occidentalis is a species of flowering plant in the saxifrage family known by the common name coastal brookfoam. It is native to the west coast of North America from British Columbia to California, where it grows in shady areas near riverbanks and streams. It is a rhizomatous perennial herb producing large, rounded leaves with blades up to 45 centimeters long and 12 wide, borne on petioles up to 30 centimeters in length. Each leaf has several rounded lobes with dull teeth along the edges. The inflorescence reaches 30 to 60 centimeters tall on a thin stem. It bears an open array of many small white flowers, each with five tiny pointed sepals and five larger oval petals.
Eremalche parryi is a species of flowering plant in the mallow family known by the common name Parry's mallow.
Quincula is a monotypic genus of flowering plants in the nightshade family, Solanaceae. The sole species it contains, Quincula lobata, is commonly known as Chinese lantern, lobed groundcherry, or purple groundcherry.
Streptanthus albidus is a species of flowering plant in the mustard family known by the common name Metcalf Canyon jewelflower. It is endemic to California, where it is known only from the Central Coast Ranges and San Francisco Bay Area. It grows in open areas such as grasslands, often on serpentine soils.
Streptanthus glandulosus is a species of flowering plant in the mustard family known by the common name bristly jewelflower. It is native to California and southwestern Oregon, where it grows in many types of habitat, including grassland, chaparral, and woodlands. Genetic and other analyses indicate that it is a species complex with ten subspecies which evolved as populations were isolated from each other. The complex includes subspecies previously considered separate species, such as the rare Tiburon jewelflower endemic to the San Francisco Bay Area. Plants in the complex are variable. In general they are annual herbs growing 10 centimeters to over a meter in height. They may be hairless to hairy to bristly. The ephemeral basal leaves have blades borne on winged petioles. Leaves higher on the stem are linear to lance-shaped and clasp the stem at their bases. Flowers occur at intervals along the upper stem. Each flower has an urn-shaped calyx of sepals one half to over one centimeter long which can be most any color from white to yellowish to pink or purple to nearly black. Purple, white, or purple-veined white petals emerge from the tip. The fruit is a straight or curving silique up to 11 centimeters long.
Streptanthus insignis is an uncommon species of flowering plant in the mustard family known by the common names plumed jewelflower and San Benito jewelflower. It is endemic to California, where it is known only from the Inner Central Coast Ranges. It grows in grassland and chaparral habitat, usually on serpentine soils. It is an annual herb producing a hairy, bristly, branching stem up to about 60 centimeters long. The lance-shaped basal leaves are borne on short petioles. Leaves midway up the stem are longer, and those near the top are shorter. They sometimes clasp the stem at their bases. Flowers occur at intervals along the upper stem. The uppermost flowers are often sterile and different in form. Each fertile flower has a bell-shaped calyx of sepals which is purple or greenish-yellow depending on subspecies. The petals at the tip are purplish or yellowish, also depending on subspecies. The fruit is a flat, straight silique which may be over 11 centimeters long.
Viola aurea is a species of violet known by the common names golden violet and bright yellow violet. It is native to eastern California and western Nevada, where it is known from scattered occurrences in various types of dry habitat such as the slopes of desert mountains. This herb grows from a tough taproot and produces a woolly-haired stem up to about 13 centimeters tall. The leaves have toothed or wrinkled, rounded or oval blades borne on petioles. They are coated in thick, white hairs. A solitary flower is borne on an upright stem. It has five yellow petals, the lowest one marked with brown veining and the upper pair tinged with brown or purple on the outer surface.
Viola bakeri is a species of violet known by the common name Baker's violet. It is native to the Western United States, from Washington and Oregon, to the mountains of northern Nevada, and in California to the southern High Sierra Nevada.
Viola cuneata is a species of violet known by the common name wedgeleaf violet. It is native to southwestern Oregon and northwestern California, where it occurs in the forests of the coastal mountain ranges, often on serpentine soils. This rhizomatous herb produces a hairless stem reaching a maximum height of a few centimeters to around 25 centimeters. The basal leaves have purple-veined green oval, rounded, or wedge-shaped blades borne on long petioles. Leaves higher on the stem are smaller. A solitary flower is borne on a very slender upright stem. It has five white petals with yellowish bases, the lateral two and usually upper two with purple spots. Their outer surfaces may be deep purple to red, and the lowest three are generally marked with purple veining.
Viola douglasii is a species of violet known by the common name Douglas' violet, or Douglas' golden violet. 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. This rhizomatous herb produces a cluster of erect stems just a few centimeters in length to about 20 centimeters in maximum height. The leaf blades are deeply dissected into several narrow lobes or compound, made up of leaflets, and borne on long petioles. They are hairless to softly hairy in texture. A solitary flower is borne on a long, upright stem. It has five bright or deep yellow petals with brown veining and brown outer surfaces. The largest lowest petal may be over 2 centimeters in length.
Viola ocellata is a species of violet known by the common names pinto violet, two-eyed violet, and western heart's ease. It is native to southern Oregon and northern and central California, where it occurs in the coastal foothills and mountain ranges. It sometimes grows in serpentine soils and in quicksilver mines.
Viola pinetorum is a species of violet known by the common names goosefoot violet, goosefoot yellow violet, gray-leaved violet, or mountain yellow violet. It is endemic to California, where it grows in mountain ranges throughout the state. It occurs in various types of mountain habitat, including forests and talus. This herb grows from a tough taproot and produces an erect or decumbent stem up to about 22 centimeters long. The leaves are linear to oval in shape with pointed tips and toothed edges. The longest ones reach 15 to 20 centimeters in length. 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 with brownish purple coloring on the outer surfaces.
Viola praemorsa is a species of violet known by the common names canary violet, Astoria violet, and yellow montane violet.
Viola sheltonii is a species of violet known by the common names Shelton's violet and fan violet. It is native to the western United States where it occurs in forests, woodlands, and chaparral habitat. This rhizomatous herb produces a cluster of stems up to about 27 centimeters tall. The fan-like leaf blades are each divided into leaflets which are deeply dissected into narrow segments, the whole blade borne on a long petiole. A solitary flower is borne on a long, upright stem. It has five yellow petals, the lower three veined with purple-brown and the upper two stained purple-brown on the outer surfaces.
Viola tomentosa is a species of violet known by the common names feltleaf violet and woolly violet. It is endemic to the central Sierra Nevada of California, where it occurs in various types of dry mountain forest habitat. This small herb grows from a deep taproot, reaching a maximum height of 5 to 10 centimeters. The herbage is coated with woolly hairs. The leaves have oval blades borne on petioles a few centimeters long. A solitary flower is borne on a short upright stem. It is under a centimeter long with five yellow petals. The lower three petals are veined with dark brown and the upper two are stained brown or purplish on the back sides.
Viola chamissoniana is a species of flowering plant in the violet family known by the common name 'olopu. It is endemic to Hawaii, where it is known from the islands of Kauai, Oahu, Molokai, and Maui.
Viola renifolia is a species of violet known by the common names white violet and kidneyleaf violet. It is native to northern North America, where it has a widespread distribution across Canada and the northern United States as far south as Washington, Colorado, and New York.
Viola flettii is a species of violet known by the common name Olympic violet. Native to the northeastern and eastern Olympic Mountains of Washington in northwestern United States, it occurs on rocky outcrops and talus at subalpine and alpine elevations, i.e., from 1,340–2,000 metres (4,400–6,560 ft), and blooms from June through August. This rhizomatous herb produces a hairless stem reaching a maximum height of a few centimeters to around 15 centimeters. The basal leaves have purple-veined green reniform blades borne on petioles. Leaves on the flower stem are similar but smaller. A solitary flower is borne on a slender upright stem. It has five purplish-violet petals with yellowish bases, the lower three with purple veins. The lateral pair are bearded as is the stigma. The spur on the lowest petal is much shorter than the petal.
Viola decumbens is a perennial plant with a woody base that is assigned to the violet family. It has linear leaves and stipules. The bilaterally symmetrical purple flowers have five petals and a spur. It grows in fynbos and is an endemic species of the southern Western Cape province of South Africa, where it is called wild violet, a name used for other species elsewhere in the world.
