Toxicoscordion venenosum, with the common names death camas and meadow death camas, is a species of flowering plants in the genus Toxicoscordion, of the Melanthiaceae family. It is native to western North America.
Marah macrocarpa, known as chilicothe, wild cucumber, manroot or bigroot is a species of plant in the genus Marah.
Hooveria purpurea is a species of flowering plant related to the agaves known by the common name purple amole. This species of soap plant is endemic to California, where it grows in the Santa Lucia Range, in the Central Coast region. There are two varieties of this plant, and both are believed to be quite rare. It is a federally listed threatened species.
Hesperevax sparsiflora is a species of flowering plant in the family Asteraceae known by the common name erect dwarf cudweed. It is native to California and Oregon, where it grows in several habitat types including sandy coastal areas and the serpentine soils of inland hills. This is a small woolly annual herb reaching maximum heights under 18 centimeters. It has oval to rounded or scoop-shaped leaves on short petioles which vary in morphology across varieties. Small flower heads appear between the leaves. They contain greenish or whitish disc florets.
Allium howellii is a North American species of wild onion known by the common name Howell's onion. It is endemic to California.
Allium sanbornii is a North American species of wild onion known by the common name Sanborn's onion. It is native to northern California and southwestern Oregon. It grows in the serpentine soils of the southern Cascade Range and northern Sierra Nevada foothills.
Calochortus obispoensis is a rare California species of flowering plants in the lily family known by the common name San Luis mariposa lily. It is endemic to San Luis Obispo County, California, where it grows in the chaparral of the coastal mountains, generally on serpentine soils.
Caulanthus amplexicaulis is a species of flowering plant in the family Brassicaceae known by the common name claspingleaf wild cabbage.
Collinsia greenei is a species of flowering plant in the plantain family known by the common name Greene's blue-eyed Mary.
Cordylanthus nidularius is a rare species of flowering plant in the family Orobanchaceae known by the common name Mt. Diablo bird's beak.
Acmispon argophyllus, synonym Lotus argophyllus, is a species of legume native to California and northwest Mexico. It is known by the common name silver bird's-foot trefoil or silver lotus.
Minuartia howellii is an uncommon species of flowering plant in the family Caryophyllaceae known by the common names Howell's stitchwort and Howell's sandwort.
Navarretia rosulata is a rare species of flowering plant in the phlox family known by the common names San Anselmo navarretia, Marin County navarretia, and Marin County pincushionplant.
Ribes cereum is a species of currant known by the common names wax currant and squaw currant; the pedicellare variety is known as whisky currant. It is native to western North America, including British Columbia, Alberta, and much of the western United States, from Washington, Oregon, and California east as far as the western Dakotas and the Oklahoma Panhandle.
Silene douglasii is a species of flowering plant in the family Caryophyllaceae known by the common name Douglas's catchfly.
Stellaria longipes is a species of flowering plant in the family Caryophyllaceae known by the common names longstalk starwort and Goldie's starwort. It has a circumpolar distribution, occurring throughout the northernmost latitudes of the Northern Hemisphere. It is a perennial herb that grows in a wide variety of habitat types, including tundra and taiga and many areas farther south with subalpine and alpine climates. It is extremely variable in morphology, its form depending on both genetic makeup and environmental conditions. It has a widely varying number of chromosomes. In general, it is a rhizomatous perennial herb forming mats or clumps, or growing erect. The stems may be short and simple or with sprawling and highly branched. The linear to lance-shaped leaves are usually 1 to 4 centimeters long and are oppositely arranged in pairs. The inflorescence bears one or more flowers, each on a short pedicel. The flower has five pointed green sepals each a few millimeters long. There are five white petals each divided into two lobes, sometimes shallowly, but often so deeply there appear to be two petals. The plant is gynodioecious, with some flowers having functional male and female reproductive parts and others being only female.
Trichostema laxum is a species of flowering plant in the mint family, known by the common name turpentine weed from the foliage's scent.
Trichostema rubisepalum is a species of flowering plant in the mint family known by the common name Hernandez's bluecurls.
Trifolium barbigerum is a species of clover known by the common name bearded clover.
Ericameria ophitidis is a North American species of flowering shrubs in the daisy family. It is native to the northern part of the state of California in the western United States. It has been found only in three counties: Trinity County, western Tehama County, and the southwestern corner of Shasta County. It is called the serpentine goldenbush because it grows on serpentine soil, toxic to many other plants.
