Platystemon is a monotypic genus of flowering plants in the poppy family containing the single species Platystemon californicus, which is known by the common name creamcups. It is native to Oregon, California, Arizona, Utah and Baja California, and is found in open grasslands and sandy soils below 6,000 feet (1,800 m) elevation.
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.
Viola adunca is a species of violet known by the common names hookedspur violet, early blue violet, sand violet, and western dog violet. It is native to meadows and forests of western North America, Canada, and the northern contiguous United States.
Amsonia tomentosa is a species of flowering plant native to the southwestern United States and northern Mexico (Chihuahua). Its common names include woolly bluestar and gray amsonia.
Viola nuttallii is a perennial herbaceous plant in the violet family (Violaceae), and is one of the few violet species with lanceolate leaves. It is native to the western Canada and the north-central and western United States, appearing in upper steppe lands, forests, and alpine ridges.
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 hallii is a species of violet known by the common names Oregon violet and Hall's violet. It is native to southwestern Oregon and northwestern California, where it occurs in open areas in the forests and chaparral of the coastal mountain ranges, on gravelly soils, often of serpentine origin. This rhizomatous herb produces a cluster of hairless stems reaching a maximum height of about 22 centimeters. The leaves are each divided into three fleshy leaflets which are deeply divided into lance-shaped lobes and borne on short petioles, very similar to Viola beckwithii. A solitary flower is borne on a long, upright stem. It has five petals, the lower three cream-colored with yellow bases and red veining, and the upper two dark red or purplish.
Viola lobata is a species of violet known by the common name pine violet. It is native to western North America from southern Oregon through California and into northern Baja California, where it occurs in mountain ranges and foothills. It grows in woodlands and other habitat. This rhizomatous herb produces an erect stem a few centimeters tall or growing to nearly half a meter in maximum height. The leaves have variously shaped blades borne on long petioles. The blades are 5 to 15 centimeters wide and may be hairless, hairy, or waxy in texture. The leaf blades are often divided into narrow lobes or dissected into small segments. The shape of the leaf blade differentiates the two subspecies; ssp. lobata has dissected leaves and ssp. integrifolia has entire or toothed blades. A solitary flower is borne on a long, upright stem. It has five yellow petals, all five or just the lower three with purple or brown veining and the upper two stained with purple or brown on the outer surfaces.
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 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.
Eremophila lachnocalyx, commonly known as woolly-sepaled eremophila, is a flowering plant in the figwort family, Scrophulariaceae and is endemic to Western Australia. It is an erect, spreading shrub with densely hairy, greyish leaves but its most distinctive feature is its densely woolly sepals.
Myriopteris tomentosa, formerly known as Cheilanthes tomentosa, is a perennial fern known as woolly lipfern. Woolly lipfern is native to the southern United States, from Pennsylvania to Arizona and Georgia, and Mexico.
Annona tomentosa is a species of plant in the family Annonaceae. It is native to Bolivia and Brazil. Robert Elias Fries, the Swedish botanist who first formally described the species, named it after the dense woolly hairs covering its branches and leaves.
