Helen Sharsmith

Leptosyne californica is a North American species of tickseed in the family Asteraceae.

Sedella pentandra is a species of flowering plant in the family Crassulaceae known by the common name Mt. Hamilton mock stonecrop. It is endemic to California, where it grows in the Central Coast Ranges and adjacent sections of the Central Valley and coastline. It often grows on sandstone and serpentine soils. This is an annual herb growing no more than 8 centimeters high. It has small succulent leaves each a few millimeters long. The flowers atop the threadlike stems have fleshy sepals and yellowish petals a few millimeters in length.

Hesperolinon disjunctum is a species of flowering plant in the flax family known by the common name Coast Range dwarf flax. It is endemic to California, where it has a disjunct distribution along the North and Central Coast Ranges. It is a plant of serpentine soils in chaparral habitat.

Leptosyne hamiltonii, the Mt. Hamilton coreopsis or Mt. Hamilton tickseed, is a rare California species of Leptosyne in the family Asteraceae. It is found only in a small region including Mount Hamilton and the Diablo Range in the southwestern San Francisco Bay Area (Alameda, Santa Clara, and Stanislaus Counties).

Hesperolinon tehamense is a rare species of flowering plant in the flax family known by the common names Tehama County western flax and Paskenta Grade dwarf flax. It is endemic to northern California, where it is known from only about ten occurrences, mostly within Tehama and Glenn Counties. Most of its habitat is on Bureau of Land Management lands and within the Mendocino National Forest, in chaparral ecosystems with serpentine soils. The plant produces thin, hairy stems up to 50 centimeters in maximum height with small, sparse linear leaves. The inflorescence bears several small flowers

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Acmispon rubriflorus, synonym Lotus rubriflorus, is a species of legume endemic to California. It is known by the common name red-flowered bird's-foot trefoil. It is known from only four occurrences with a disjunct distribution.

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