Linum lewisii is a perennial plant in the family Linaceae, native to western North America from Alaska south to Baja California, and from the Pacific Coast east to the Mississippi River. It grows on ridges and dry slopes, from sea level in the north up to 11,000 ft (3,400 m) in the Sierra Nevada.
Helenium autumnale is a North American species of flowering plants in the family Asteraceae. Common names include common sneezeweed and large-flowered sneezeweed.
Coreopsis bigelovii is a species of flowering plant in the daisy or sunflower family, Asteraceae, with the common names Bigelow coreopsis and Bigelow's tickseed. It is endemic to California.
Cirsium occidentale, with the common name cobweb thistle or cobwebby thistle, is a North American species of thistle in the sunflower family.
Collinsia parviflora is a species of flowering plant in the family Plantaginaceae known by the common names maiden blue eyed Mary and small-flowered collinsia.
Layia glandulosa is a species of flowering plant in the family Asteraceae known by the common names whitedaisy tidytips and white layia. It is native to western North America south from central Washington (state) to Baja California and east to Utah and Arizona, where it is common in a number of habitat types.
Agoseris grandiflora is a North American species of flowering plant in the family Asteraceae known by the common names California dandelion, bigflower agoseris, and grassland agoseris.
Arnica cordifolia is a species of arnica in the sunflower family, known by the common name heartleaf arnica. It is native to western North America from Alaska to California to New Mexico, as far east as Ontario and Michigan. It is a plant of many habitat types, including coniferous forests, and moist mountain meadows from sea level to above 12,000 feet (3,700 m), but most commonly 4,000–11,000 feet (1,200–3,400 m).
Symphyotrichum ascendens is a species of flowering plant in the family Asteraceae known by the common names western aster, long-leaved aster, and Rocky Mountain aster. Blooming July–September, it is native to western North America and can be found at elevations of 500–3,200 m (1,600–10,500 ft) in several habitats.
Symphyotrichum defoliatum is a species of flowering plant in the family Asteraceae known by the common name San Bernardino aster. It is endemic to Southern California where it grows in grasslands and meadows, and it is of conservation concern.
Symphyotrichum frondosum is a species of flowering plant in the family Asteraceae native to western North America. Commonly known as short-rayed alkali aster, it is an annual or perennial herbaceous plant that may reach 140 centimeters tall.
Symphyotrichum greatae is a species of flowering plant in the family Asteraceae endemic to California and known by the common name Greata's aster.
Balsamorhiza deltoidea is a species of flowering plant in the sunflower tribe of the plant family Asteraceae known by the common name deltoid balsamroot. It is native to western North America from British Columbia to California, where it grows in many types of generally mountainous habitat.
Balsamorhiza sagittata is a North American species of flowering plant in the tribe Heliantheae of the family Asteraceae known by the common name Arrowleaf Balsamroot. It is widespread across western Canada and much of the western United States. A specimen was collected by explorer and botanist Meriwether Lewis near Lewis and Clark Pass in 1806.
Chrysothamnus viscidiflorus is a species of shrub in the family Asteraceae of the Americas known by the common names yellow rabbitbrush and green rabbitbrush.
Encelia actoni, also known by the common names Acton brittlebush and Acton encelia, is a species of flowering plant in the family Asteraceae.
Nothocalais troximoides is a species of flowering plant in the family Asteraceae known by the common name sagebrush false dandelion. It is native to western North America, including British Columbia and the northwestern United States, where it grows in sagebrush and other plateau and mountain habitat types. It is a perennial herb growing from a thick caudex and producing a woolly stem up to about 25 cm tall. The leaves are located around the base of the stem and often have crinkled wavy edges, and sometimes a thin coat of small hairs. They measure up to 30 cm long. The inflorescence is a flower head lined with green, sometimes purple-speckled, phyllaries and containing many yellow ray florets and no disc florets. The fruit is a cylindrical achene up to 1.3 cm long not including the large pappus of up to 30 silvery white bristles which may be an additional 2 cm in length.
Penstemon speciosus is a species of penstemon known by the common name royal penstemon of western North America.
Tetradymia argyraea is a species of flowering plant in the aster family known by the common names spineless horsebrush and gray horsebrush. It is native to western North America.
Balsamorhiza lanata, with the common name lanate balsamroot, is a species of plant in the tribe Heliantheae of the family Asteraceae native to California.
