Achnatherum is a genus of flowering plants in the grass family, Poaceae. It includes 20 species of needlegrass native to temperate Eurasia and North Africa. Several needlegrass species have been switched between Achnatherum and genus Stipa; taxonomy between the two closely related genera is still uncertain. In 2019 Peterson et al. reorganized the genera in tribe Stipeae based on molecular DNA studies, and placed the species from the Americas into other genera.
Eriocoma arida is a species of grass known by the common name Mormon needlegrass. It is native to the southwestern United States and northeastern Mexico.
Camissoniopsis bistorta is a species of flowering plant in the evening primrose family known by the common names southern suncup and California suncup. It is native to southern California and Baja California, where it grows in several types of plant community along the coast and in the coastal hills and mountain ranges. This is a hairy annual or short-lived perennial herb spreading from a basal rosette, with stems reaching up to 80 centimeters long. The leaves are narrow and sometimes toothed, and 1 to 12 centimeters in length. Toward the end of the spreading stems are nodding inflorescences of flowers, each flower with four bright yellow petals dotted with red at their bases.
Eriocoma coronata, formerly classified as Achnatherum coronatum, is a greenish species of grass known by the common name crested needlegrass, giant ricegrass, and giant stipa.
Eriocoma latiglumis is a species of grass known by the common names wide-glumed needlegrass and Sierra needlegrass.
Eriocoma lettermanii is a species of grass known by the common name Letterman's needlegrass. It is native to the western United States from California and Oregon to Montana and New Mexico, where it is a resident of several types of habitat.
Eriocoma occidentalis is a species of grass known by the common name western needlegrass. It is native to western North America from British Columbia to California, Colorado, and Arizona and in northeastern Mexico (Chihuahua), where it grows in many types of habitat.
Eriocoma parishii is a species of grass known by the common name Parish's needlegrass.
Eriocoma pinetorum is a species of grass known by the common names pinewoods needlegrass and pine needlegrass. It is native to most of the western United States from California to Montana to New Mexico, where it grows in woodland and forest in rocky mountainous areas.
Calochortus palmeri is a species of flowering plant in the lily family known by the common names Palmer's mariposa lily and strangling mariposa.
Calochortus weedii is a North American species of flowering plants in the lily family known by the common name Weed's mariposa lily.
Hooveria parviflora is a species of perennial herb in the subfamily Agavoideae known by the common name smallflower soap plant. It is a monocot, native to coastal southern California and Baja California, where it is a member of the coastal sage scrub flora. It resembles a smaller version of Chlorogalum pomeridianum, with wavy leaves and white flowers that open during the day.
Acmispon haydonii, synonyms Lotus haydonii and Syrmatium haydonii, is a species of legume native to California It is known by the common names pygmy lotus, rock bird's-foot trefoil and Haydon's lotus.
Acmispon prostratus, synonyms Lotus nuttallianus and Syrmatium prostratum, is a species of legume native to California and northwestern Mexico. It is known by the common names beach lotus, Nuttall's lotus, and wire bird's-foot trefoil. It is native to Baja California and just into San Diego County, California, where it is a resident of coastal habitats, such as beaches and bluffs.
Phacelia stellaris is a rare species of flowering plant in the borage family, Boraginaceae, known by the common names star phacelia and Brand's phacelia.
Salvia munzii is a semi-evergreen perennial species of sage known by the common name Munz's sage or San Miguel Mountain sage. It is native to northern Baja California, Mexico, and it can be found in a few locations just north of the border in San Diego County, California, where it is particularly rare. It is characterized by small leaves and clear blue flowers. It is a member of the coastal sage scrub and chaparral plant communities.
Clinopodium chandleri is an uncommon species of flowering plant in the mint family known by the common name San Miguel savory. It is native to northern Baja California and several areas of southern California, where it can be found in mountain chaparral. A fragrant plant with white flowers, it is one of southern California's rarest shrubs.
Agnorhiza ovata is a species of flowering plant known by the common name southern mule's ears. It is native to the mountains and foothills of southern California and Baja California, occurring the Coast Ranges and Sierra Nevada foothills in Tulare, Kern, Ventura, Los Angeles, Orange, Riverside, and San Diego counties in California, with additional populations in the Peninsular Ranges south of the international border.
Eriocoma thurberiana is a species of grass known by the common name Thurber's needlegrass. It is native to the western United States, where it occurs from Washington to California and east to Montana and Wyoming.
Eriocoma lemmonii is a species of grass known by the common name Lemmon's needlegrass. It is native to western North America, where its distribution extends from British Columbia to southern California.
