Erythronium purpurascens is a species of flowering plant in the lily family which is known by the common names purple fawn lily and Sierra Nevada fawn lily.
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.
Keckiella lemmonii is a species of flowering plant in the plantain family known by the common name Lemmon's keckiella.
Astragalus bicristatus is a species of milkvetch known by the common names crested milkvetch and two-crested milkvetch. It is endemic to southern California, where it grows in the coniferous forests of the San Gabriel and San Bernardino Mountains of the Transverse Ranges.
Astragalus inversus is a species of milkvetch known by the common name Susanville milkvetch.
Chlorogalum angustifolium is a species of flowering plant, known by the common name narrowleaf soap plant.
Lupinus truncatus is a species of lupine known by the common name collared annual lupine.
Microseris acuminata is a species of flowering plant in the family Asteraceae known by the common name Sierra foothill silverpuffs. It is native to the Central Valley of California and the mountain ranges, including the Sierra Nevada, surrounding it. There is a disjunct occurrence in Jackson County, Oregon. The plant grows in grassy habitat, woodlands, and sometimes the edges of vernal pools.
Diplacus johnstonii is a species of monkeyflower known by the common name Johnston's monkeyflower.
Diplacus layneae is a species of monkeyflower known by the common name Layne's monkeyflower. It is an annual herb that is endemic to California.
Monardella macrantha is a species of flowering plant in the mint family known by the common name red monardella. It is native to coastal mountain ranges of southern California and Baja California, where it grows in several habitat types, including chaparral, woodlands, and forest.
Rhinotropis californica, synonym Polygala californica, is a species of flowering plant in the milkwort family known by the common name California milkwort. It is native to southwestern Oregon and northern and central California, where it grows in the coastal mountain ranges in local habitat types such as chaparral and forest. It is a perennial herb producing spreading stems, generally decumbent in form, up to about 35 centimeters in maximum length, lined with narrow oval leaves each a few centimeter long. The upper inflorescences produce several open flowers, and there may be some closed, cleistogamous flowers lower on the plant. The open flowers have pink or white winglike lateral sepals with hairy edges. The petals are similar in color, the central one tipped with a white or yellow beak. The fruit is a flattened green capsule up to a centimeter long containing hairy seeds.
Raillardella argentea is a species of flowering plant in the family Asteraceae known by the common name silky raillardella. It is native to the Sierra Nevada and nearby mountain ranges of California, its distribution extending east into Nevada and north along the Cascade Range and Klamath Mountains into Oregon. It grows in many types of dry, open mountain habitat. It is a rhizomatous perennial herb growing in a clump of rosetted basal leaves. The leaves are lance-shaped, up to 8 centimeters long, and coated in silky hairs. The plant produces an inflorescence up to about 15 centimeters tall consisting of a solitary flower head which is cylindrical to somewhat bell-shaped. The head is enclosed in the fused outer scales of the flowers, which look similar to the phyllaries of many other species' flower heads. The head contains many yellow disc florets up to a centimeter long each, and no ray florets. The fruit is a long, narrow achene which may be 2 centimeters in length including its plumelike pappus.
Raillardella pringlei is an uncommon species of flowering plant in the family Asteraceae known by the common name showy raillardella.
Raillardella scaposa is a species of flowering plant in the family Asteraceae known by the common name stem raillardella. It is native to the Sierra Nevada of California and western Nevada and parts of the southern Cascade Range in Oregon, where it grows in varying habitat types, from wet to dry and exposed to shaded. It is a rhizomatous perennial herb growing in a clump of rosetted basal leaves. The leaves are linear to lance-shaped, up to 16 centimeters long, and glandular. The plant produces an inflorescence just a few centimeters to half a meter tall consisting of flower heads which are cylindrical to hemispheric in shape. Each head contains many yellow to orange disc florets and sometimes a few ray florets. The fruit is a long, narrow achene 1 to 2 centimeters in length including its pappus of plumelike bristles.
Streptanthus barbiger is a species of flowering plant in the mustard family known by the common name bearded jewelflower. It is endemic to California, where it is limited to the North Coast Ranges. It grows in woodlands and chaparral habitat, often on serpentine soils. It is an annual herb producing a branching stem up to about 80 centimeters in maximum height. Leaves near the base of the stem are lance-shaped to oval and pointed, usually with toothed edges, the blades measuring up to 7 centimeters long. Leaves higher on the stem may be longer but are narrower and have smooth edges. Flowers occur at intervals along the upper stem. Each has a spherical to urn-shaped calyx of greenish yellow or purple sepals under a centimeter long. Whitish or purple-tinged petals up to a centimeter long emerge from the tip. The fruit is a long, flat, curving silique which may be 7 centimeters in length.
Streptanthus bernardinus is a species of flowering plant in the mustard family known by the common name Laguna Mountains jewelflower, or Laguna Mountain jewelflower.
Trifolium obtusiflorum is a species of clover known by the common name clammy clover. It is native to California in the Peninsular, Transverse, Sierra Nevada, and the California Coast Ranges and Cascade Range into southwestern Oregon.
Meconella oregana, the white fairypoppy, is a plant species native to Oregon, California, Washington and British Columbia. It grows on sandy bluffs, meadows and stream banks, at elevations of less than 300 m.
Vanilla odorata, also known as vanilla tlatepusco, is a species of flowering plant in the family Orchidaceae, native to southern Mexico, Central America, and tropical South America. With Vanilla planifolia it is a parent of the vanilla crop species Vanilla × tahitensis.
