Cercis canadensis, the eastern redbud, is a large deciduous shrub or small tree, native to eastern North America from southern Michigan south to central Mexico, east to New Jersey. Species thrive as far west as California and as far north as southern Ontario, roughly corresponding to USDA hardiness zone 6b. It is the state tree of Oklahoma.
Heuchera micrantha is a species of flowering plant in the saxifrage family known by the common name crevice alumroot, or small-flowered alumroot.
Horkelia marinensis is a rare species of flowering plant in the rose family known by the common name Point Reyes horkelia. It is endemic to the California coastline, where it is known from about Fort Bragg to near Santa Cruz. It grows on beaches and in other sandy coastal areas. This is a perennial herb growing in low, dense patches. The leaves are up to 10 centimeters long and are made up of toothed, hairy, gray-green leaflets each around a centimeter long. The foliage is glandular and strongly scented. The plant produces green to reddish-green stems up to 30 centimeters long which bear inflorescences of dense clustered flowers. Each flower has minute bractlets under reddish-green, fuzzy sepals. The petals are generally white and narrow with rounded ends. The center of the flower contains a ring of stamens around a patch of 20 to 30 pistils.
Horkelia tridentata is a species of flowering plant in the rose family known by the common name threetooth horkelia. It is native to all of the mountain ranges of northern California and southern Oregon, where it grows in coniferous forest. This is a perennial herb forming tufts of erect leaves and stems. The leaves are 3 to 12 centimeters long, each made up of hairy gray-green leaflets which are tipped with usually three teeth. Unlike many other horkelias, this species is generally not strongly scented. The green or reddish stems reach a maximum length of about 40 centimeters and hold clusters of flowers. Each flower has minute bractlets beneath small, hairy, pointed sepals and narrow white petals.
Ivesia aperta is a species of flowering plant in the rose family known by the common name Sierra Valley mousetail.
Ivesia argyrocoma is a species of flowering plant in the rose family that is also known by its common name, silverhair mousetail. It is native to the San Bernardino Mountains of southwestern San Bernardino County, California. A population of Ivesia argyrocoma is also found in Baja California in Mexico; this population may or may not be distinct and further study is required. Ivesia argyrocoma is a small perennial herb producing a clump of fuzzy reddish naked stems that grow horizontal to the ground and a number of tail-like hairy leaves which grow erect and may curl or droop. The stems are 10 centimetres (3.9 in) to 20 centimetres (7.9 in) long. Each leaf is a nearly cylindrical strip of tightly overlapping leaflets arranged around a central rachis up to 8 centimetres (3.1 in) long. The leaflets are green and covered in a dense coat of shiny silver hairs. Most of the leaves emerge from the base of the stem; a few very small ones may emerge farther up the stem. At the tip of the stem is an inflorescence of one or more clusters of glandular flowers. Each flower has generally five green and red, densely silver-haired, triangular sepals and five smaller oval or spoon-shaped white petals. The center of the Ivesia argyrocoma flowers contain twenty yellow-anthered white stamens and several pistils. The fruit is a tiny smooth brown achene.
Ivesia saxosa is a species of flowering plant in the rose family known by the common name rock mousetail, or rock ivesia. It is native to the mountains and deserts of central and southern California and northern Baja California, where it grows in cracks and crevices in rock faces and slopes. This is a clumpy perennial herb with hanging leaves and stems. Each leaf is a flat strip or cluster of rounded, lobed leaflets. The green to reddish stem is up to 30 centimeters long and bears an inflorescence of clustered flowers. Each flower is almost a centimeter wide and has hairy pointed sepals and smaller rounded to spoon-shaped yellow petals. In the center of the flower are up to 40 stamens and many pistils. The fruit is a tiny pale achene.
Ivesia sericoleuca is a species of flowering plant in the rose family known by the common name Plumas mousetail, or Plumas ivesia.
Chorizanthe uniaristata is a species of flowering plant in the buckwheat family known by the common name one-awn spineflower. It is endemic to central California, where it is known from several of the local mountain ranges, as well as the Central Coast.
Collinsia corymbosa is a species of flowering plant in the plantain family known by the common name round-headed Chinese houses. It is endemic to the coastline of California north of the San Francisco Bay Area, where it is uncommon and scattered. Its habitat is the sand dunes of the immediate coastline. This is an annual herb producing a scaly, hairy, red to reddish green stem which grows upright or decumbent to a maximum length of about 25 centimeters. The thick, sparsely hairy leaves are rippled and lobed along the edges, which may be somewhat turned under. The inflorescence is a dense whorl of several distinctive flowers. Each has a hairy calyx of lobed reddish sepals and a corolla up to about 2 centimeters long. The flower has two small upper lobes and three longer lower lobes which come together in a nearly tubular shape. It is generally white with a light purple tint. The smaller upper lobes curl back and dry to brown at their lips.
Nemophila heterophylla is a species of flowering plant in the borage family known by the common name small baby blue eyes.
Packera subnuda is a species of flowering plant in the aster family known by the common names Buek's groundsel and cleftleaf groundsel. It is native to western North America from the Northwest Territories to northern California to Wyoming, where it grows in high mountain meadows in subalpine and alpine climates.
Silene marmorensis is a rare species of flowering plant in the family Caryophyllaceae known by the common names Marble Mountain catchfly, Marble Mountain campion, and Somes Bar campion. It is endemic to the southern Klamath Mountains of northern California, where it grows in mountain woodlands and forests. It is a perennial herb producing several stems and shoots from a woody, branching caudex and thick taproot. The hairy, glandular stems grow erect to a maximum height near 40 centimeters. The lance-shaped leaves are a few centimeters long and are borne in pairs, the lowermost drying early. The inflorescence is a terminal cyme of flowers at the top of the stem, and some flowers may occur in the leaf axils. Each flower has a hairy, veined calyx of fused sepals. The flowers bloom at night, the five pinkish or green-tinged petals opening at the tip of the calyx.
Suaeda calceoliformis is a species of flowering plant in the family Amaranthaceae known by several common names, including Pursh seepweed and horned seablite.
Suaeda californica is a rare species of flowering plant in the amaranth family known by the common name California seablite. It is endemic to San Luis Obispo County, California, where it is known from a few occurrences in the marshes around Morro Bay.
Suaeda nigra, often still known by the former name Suaeda moquinii, is a species of flowering plant in the amaranth family, known by the vernacular names bush seepweed or Mojave sea-blite.
Suksdorfia ranunculifolia is a species of flowering plant in the saxifrage family known by the common name buttercup suksdorfia. It is native to western North America from British Columbia and Alberta south to northern California. It grows in moist, rocky habitat in mountains and foothills. It is a non-rhizomatous perennial herb growing up to 40 centimeters tall. The leaves have rounded blades up to 4 centimeters wide with several large lobes edged with rounded teeth. The blades are light green, slightly fleshy, hairless in texture, and are borne on petioles up to 15 centimeters long. The inflorescence is a dense, flat-topped cluster of up to 35 flowers borne atop a mostly naked, hairy, glandular stalk. Each flower has a bell-shaped calyx of pointed sepals and five white or pink-tipped petals. The fruit is an oval brown capsule measuring 4 millimeters in length.
Trichostema laxum is a species of flowering plant in the mint family, known by the common name turpentine weed from the foliage's scent.
Tripterocalyx crux-maltae is a species of flowering plant in the four o'clock family known by the common names Lassen sandverbena and Kellogg's sand-verbena.
Suaeda maritima is a species of flowering plant in the family Amaranthaceae known by the common names herbaceous seepweed and annual seablite.
