Arctostaphylos regismontana is a species of manzanita known by the common name Kings Mountain manzanita. It is endemic to California, where it is known from the northern slopes of the Santa Cruz Mountains in the southern San Francisco Bay Area.
Astragalus gibbsii is a species of milkvetch known by the common name Gibbs's milkvetch. It is native to eastern California, the north-central Sierra Nevada, and western Nevada, where it grows in the pine forest habitat of the mountains and the sagebrush of the plateaus.
Astragalus sabulonum is a species of milkvetch known by the common name gravel milkvetch. It is native to the Southwestern United States and California, from desert to mountain habitats.
Epilobium siskiyouense is a rare species of flowering plant in the evening primrose family known by the common names Siskiyou willowherb and Siskiyou fireweed.
Erodium brachycarpum is a species of flowering plant in the geranium family known by the common names hairy-pitted stork's-bill and shortfruit stork's bill. It is native to southern Europe but it is known elsewhere as an introduced species and often a weed, such as the west coast of the United States where it is widespread in California and Oregon.
Hackelia setosa is a species of flowering plant in the borage family known by the common name bristly stickseed. It is native to the Klamath Mountains of northern California and southern Oregon, United States, and it is also known from Sierra Valley to the southeast of that range. It grows in open and wooded habitat. It is a hairy perennial herb up to about 60 centimeters tall. Most of the leaves are located around the base of the plant, reaching up to 22 centimeters long. Leaves higher on the stem are shorter and narrower. The hairy inflorescence is an open array of branches, each a coiling panicle of white-throated blue flowers. The fruit is a cluster of prickly nutlets.
Horkelia hispidula is a species of flowering plant in the rose family known by the common name White Mountains horkelia. It is endemic to the White Mountains, a small mountain range that straddles the border between California and Nevada east of the Sierra Nevada. It is a resident of dry scrub and alpine and subalpine forest habitat. This is a perennial herb producing a low mat of hairy, glandular greenish gray foliage about a woody base. The leaves are cylindrical and sometimes taper to a point, growing erect in a patch around the caudex. Each leaf is up to 10 centimeters long and is made up of crowded pairs of hairy leaflets. The inflorescence is an array of up to 15 flowers atop an erect stalk, each flower made up of five hairy, pointed, reflexed sepals and five white petals.
Boechera breweri is a species of flowering plant in the family Brassicaceae known by the common name Brewer's rockcress.
Veronica wormskjoldii is a species of flowering plant in the plantain family known by the common name American alpine speedwell. It is native to much of northern and western North America, including the western United States and northern Canada, from where it grows in moist alpine habitat, such as mountain forest understory. It has a wide subarctic distribution from Alaska to Greenland.
Leptosiphon nudatus is a species of flowering plant in the phlox family known by the common name Tehachapi linanthus.
Lithospermum californicum is a species of flowering plant in the borage family known by the common name California stoneseed. It is native to southern Oregon and northern California, where it can be found in many types of mountain habitat, such as forest, woodland, and chaparral. It is a hairy perennial herb growing from a taproot and woody caudex. It produces a clump of branching, spreading stems up to about 40 centimeters long. The stems are lined with widely lance-shaped, lightly hairy leaves up to 5 centimeters long. The flowers appear near the ends of the stem branches, each with a calyx of narrow, pointed sepals. The corolla is bright golden yellow and nearly a centimeter wide at the mouth.
Monardella breweri is a species of flowering plant in the mint family known by the common name Brewer's monardella.
Nama rothrockii is a species of flowering plant in the borage family known by the common name Rothrock's fiddleleaf. It is native to the mountains and plateaus of eastern California, such as the southern Sierra Nevada, and western Nevada and Arizona, where it grows in several types of local habitat.
Perityle inyoensis, known by the common names Inyo rockdaisy and Inyo laphamia, is a rare species of flowering plant in the aster family.
Potentilla cristae is a rare species of cinquefoil known by the common name crested cinquefoil. It is endemic to the Klamath Mountains of far northern California, where it is known from a few occurrences in the subalpine and alpine climates of the high mountain ridges. It grows in talus and moist rocky or gravelly serpentine soils. This is a low, matted plant producing a clump of hairy, glandular herbage up to about 20 centimeters tall. Each hairy leaf is divided into three rounded leaflets which are toothed or lobed and measure up to 2 centimeters in length. The inflorescence is a cyme of a few flowers, each with five small yellow petals. The fruit is a minute achene just a millimeter wide, which is smooth with a crest.
Rupertia rigida is a species of flowering plant in the legume family known by the common name Parish's California tea, or Parish's rupertia.
Stachys bullata is a species of flowering plant in the mint family known by the common name California hedgenettle.
Veronica cusickii is a species of flowering plant in the plantain family known by the common name Cusick's speedwell. It is native to western North America from British Columbia to Montana to northern California, where it occurs in mountain meadows and forests.
Veronica peregrina is a species of flowering plant in the plantain family known by several common names including neckweed, American speedwell, purslane speedwell and hairy purslane speedwell. It is native to the Americas, and is known on other continents as an introduced species and a common weed. It can be weedy in its native range as well, growing on roadsides, on fields, and in other disturbed habitat. It is an annual herb growing from a taproot. The two subspecies are defined generally on the basis of hairiness: ssp. xalapensis is coated in glandular hairs and ssp. peregrina is a hairless variety. The plant produces erect stems up to about 30 centimeters tall. The leaves vary in shape from linear to lance-shaped to spoon-shaped with smooth or serrated edges; the lower leaves are borne on petioles. The inflorescence is a loose terminal raceme of flowers and lance-shaped bracts. The flowers are generally white and 2 or 3 millimeters wide.
Veronica triphyllos is a species of flowering plant in the plantain family known by the common name finger speedwell, or fingered speedwell. It is native to Europe and western Asia, and it can be found elsewhere as an introduced species, for example, in some parts of the United States. It is an annual herb growing from a taproot and producing a hairy, glandular, branching or unbranched stem up to about 20 centimeters in maximum height. The deeply lobed leaves are rarely more than a centimeter in length. The hairy blades are borne in opposite pairs on the stem. The inflorescence at the tip of the stem produces deep blue flowers a few millimeters wide.
