Abronia pogonantha is a species of flowering plant in the four o'clock family (Nyctaginaceae) known by the common name Mojave sand-verbena. It is native to California and Nevada, where it grows in the Mojave Desert, adjacent hills and mountains, and parts of the San Joaquin Valley in the Central Valley.
Zornia latifolia is a species of flowering plant in the legume family, Fabaceae. It is native to South America. Its distribution may extend into Central and North America. It is also known as a naturalized species in tropical western Africa. The plant is known commonly as maconha brava.
Astragalus shevockii is a rare species of milkvetch known by the common names Little Kern milkvetch and Shevock's milkvetch. It is endemic to Tulare County, California, where it grows in the High Sierra, generally on granite-based soils in Jeffrey pine forests.
Calochortus greenei is a species of flowering plant in the lily family known by the common name Greene's mariposa lily. It is native to northern California and southern Oregon, where it grows in the forest and woodlands of the mountains. It is a perennial herb which produces a branching stem up to about 30 centimeters in maximum height. There is a basal leaf about 20 centimeters long which does not wither at flowering. The inflorescence bears 1 to 5 erect bell-shaped flowers. Each flower has three sepals and three light purple petals with darker areas at the bases. The petals are 3 to 4 centimeters long and have a coat of long hairs on their inner surfaces. The fruit is a winged capsule about 2 centimeters long.
Calochortus persistens is a rare North American species of flowering plant in the lily family known by the common name Siskiyou mariposa lily. It is native to northern California and southern Oregon.
Calochortus raichei is a rare species of flowering plant in the lily family known by the common name Cedars' fairy-lantern. It is endemic to Sonoma County, California, where it is known only from The Cedars, an unincorporated area outside Guerneville north of Cazadero, just west of Austin Creek State Recreation Area.
Cistanthe parryi is a species of flowering plant in the Montiaceae family known by the common name Parry's pussypaws. It is native to the southwestern United States and Baja California. It is a small annual herb producing spreading stems up to about 11 centimeters long. There is a basal rosette of small, thick, spoon-shaped leaves no more than about 3 centimeters long, with many along the stems as well. The inflorescence is a cluster a few centimeters wide, with each bearing three white petals surrounded by a few thin sepals. The fruit is a capsule less than a centimeter wide.
Camissonia contorta is a species of evening primrose known by the common name plains evening primrose. It is native to western North America from British Columbia to California to Idaho, where it grows in many habitat types. It is an annual herb producing a slender, bending to curling red or green stem which is sometimes hairy. It is up to 30 centimeters long and erect or spreading out. The blue-green leaves are linear to very narrowly oval in shape and up to 3.5 centimeters long. The nodding inflorescence produces one or more small flowers. Each has bright yellow petals up to half a centimeter long, sometimes with small red dots near the bases. The fruit is a capsule about 3 centimeters long containing shiny seeds.
Camissonia pusilla is a species of evening primrose known by the common name little wiry suncup. It is native to the western United States from California to Idaho, where it grows in sagebrush and other habitat. It is a petite, hairy, glandular annual herb producing very slender erect stems up to about 22 centimeters in maximum height. The leaves linear with toothed edges and 1 to 3 centimeters long. The nodding inflorescence produces flowers with yellow petals 2 or 3 millimeters long and usually spotted with red near the bases. The fruit is a straight or coiling capsule up to 3 centimeters long.
Carex filifolia is a species of sedge known by the common name threadleaf sedge.
Cirsium andrewsii is an uncommon species of thistle known by the common name Franciscan thistle. It is endemic to California, where it is known from the coastline of the San Francisco Bay Area from Marin to San Mateo Counties. There are also reports of isolated populations in the Klamath Mountains and in the Sierra Nevada.
Arctostaphylos rainbowensis is a species of manzanita known by the common name Rainbow manzanita. It is endemic to California, where it is known only from northern San Diego and southern Riverside Counties in the Peninsular Ranges.
Gratiola neglecta is a species of flowering plant known by the common name clammy hedgehyssop. It is native to much of North America, including most all of the United States and the southern half of Canada. It is generally found in moist to wet habitat. This is an unobtrusive annual herb producing a glandular stem up to about 30 centimeters tall. The lance-shaped to oval leaves are arranged oppositely about the stem. They are up to 5 centimeters long and sometimes toothed along the edges. The inflorescence is a raceme of nearly cylindrical tubular whitish flowers each about a centimeter long. At the base of each flower is a fringe of five pointed sepals. The fruit is a spherical capsule about half a centimeter wide.
Boechera breweri is a species of flowering plant in the mustard family known by the common name Brewer's rockcress.
Linanthus concinnus is a species of flowering plant in the phlox family known by the common name San Gabriel linanthus. It is endemic to the San Gabriel Mountains in the Los Angeles area, where it occurs in dry, rocky habitat in chaparral and forest habitat. This is a small annual herb producing a thin, hairy, glandular stem no more than about 12 centimeters tall. The leaves are divided into narrow, threadlike linear lobes up to 1.5 centimeters long. The inflorescence is a cluster of 3 to 7 funnel-shaped flowers. The lobes of the corolla are up to a centimeter long and white with 2 magenta marks at the base of each.
Mentzelia polita is a species of flowering plant in the family Loasaceae known by the common name polished blazingstar. It is native to the southwestern United States, where it grows in desert mountains, washes, and other dry habitat.
Monardella breweri is a species of flowering plant in the mint family known by the common name Brewer's monardella.
Physalis viscosa is a species of flowering plant in the nightshade family known by many common names, including starhair groundcherry, stellate ground-cherry and grape groundcherry in English, and arrebenta-cavalo, balãozinho, and camambú in Portuguese. It is native to South America, and it is known on other continents as an introduced species and sometimes a weed. It can grow in many types of habitat, including disturbed areas.
Solanum dimidiatum is a species of nightshade known by the common names western horsenettle, Torrey's nightshade, and robust horsenettle. It is native to the central United States, where it grows in many types of habitat, including disturbed areas. In California it is known as an introduced species and a noxious weed. It is a rhizomatous perennial herb producing an erect stem up to 80 centimeters tall. It is covered in yellow prickles and branched hairs. The leaves may be up to 15 centimeters long, their edges wavy to lobed and sometimes toothed. The inflorescence is a branching array of several flowers. Each flower has a bell-shaped corolla measuring 3 to 5 centimeters wide. It is lavender to purple, or white. The five large, yellow anthers are about a centimeter long. The fruit is a spherical yellow berry up to 3 centimeters wide.
Verbena menthifolia is a species of verbena known by the common name mint-leaved vervain or mint vervain. It is native to the southwestern United States and northern Mexico, where it occurs in many types of open, dry habitat such as desert scrub. This perennial herb produces one or more rough-haired, erect stems up to about 75 centimeters in maximum height. The hairy leaves are a few centimeters long and are divided near the base into a few narrow lobes which have serrated edges. The inflorescence is made up of one to three narrow, erect spikes of flowers up to 30 centimeters long. The flowers are spaced, not densely packed on the slender spike. Each flower has a small purple corolla 2 or 3 millimeters wide.
