Robert Francis Hoover

Lupinus spectabilis is a species of lupine known by the common name shaggyhair lupine. It is endemic to a section of the central Sierra Nevada foothills in Mariposa and Tuolumne Counties, where it is a member of the serpentine soils flora.

Orcuttia pilosa is a rare species of grass known by the common name Hairy Orcutt grass.

Brodiaea appendiculata, the appendage brodiaea or appendage cluster-lily, is an uncommon species of plant in the genus Brodiaea. Brodiaea appendiculata is endemic to California, where it grows in the mountain foothills in the north part of the state.

Triteleiopsis, common name Bajalily or blue sand lily, is a genus of one known species of flowering plant found in Sonora, Baja California and southwestern Arizona. In the APG III classification system, it is placed in the family Asparagaceae, subfamily Brodiaeoideae (formerly the family Themidaceae). The only known species is the bulbous plant Triteleiopsis palmeri, with the common name Palmer's Bajalily.

Downingia bella, also known as Hoover's calicoflower or Hoover's Downingia, is a member of the Bellflower Family (Campanulaceae). The genus is named after A.J. Downing (1815–1852) a noted American horticulturist and landscape architect. This native annual herb is endemic to California and found in valley grassland communities. Its habitat is wetlands, generally vernal pools between 4600 and 5250 feet (1400 to 1600m). As approximately 20% of vernal pools in California have been lost, D. bella is uncommon. The range of D. bella is scattered from locations in Riverside County to areas in the

Chlorogalum grandiflorum is a species of flowering plant known by the common name Red Hills soap plant. It is endemic to the Sierra Nevada foothills, such as the Red Hills (Tuolumne County), of California, where it grows in chaparral, woodland, and forest.

Brodiaea pallida is a rare species of flowering plant in the cluster-lily genus known by the common name Chinese Camp brodiaea.

Brodiaea elegans is a species of flowering plant in the cluster-lily genus known by the common names harvest brodiaea, elegant brodiaea, and elegant cluster-lily. The bulb is native to the mountain ranges of California and Oregon, where it grows in woodlands and meadows.

Arctostaphylos montereyensis is a species of manzanita known by the common names Monterey manzanita and Toro manzanita. It is endemic to Monterey County, California, where it is known from only a few occurrences around Fort Ord and Toro County Park near Salinas. It is a plant of maritime chaparral on sandy soils.

Triteleia montana is a monocot flowering plant in the genus Triteleia. Its common names include Sierra triteleia, and mountain triteleia. It is endemic to California, where it is limited to the Sierra Nevada. It occurs in coniferous forests on granite soils. The Latin specific epithet montana refers to mountains or coming from mountains. It is a perennial wildflower growing from a corm. There are two or three basal leaves measuring up to 30 centimeters long and just a few millimeters wide. The inflorescence arises on an erect, rough-haired stem up to 25 or 30 centimeters tall. It is an

Triteleia dudleyi is a species of flowering plant known by the common name Dudley's triteleia. It is endemic to California, where it is known from sections of the High Sierra Nevada and the Transverse Ranges. It is a plant of subalpine climates, growing in mountain forests. It is a perennial herb growing from a corm. It produces two or three basal leaves up to 30 centimeters long by one wide. The inflorescence arises on an erect stem up to 30 or 35 centimeters tall and bears an umbel-like cluster of many flowers. Each flower is a funnel-shaped yellow bloom that dries purple. The flower has

Triteleia clementina is a rare species of flowering plant known by the common name San Clemente Island triteleia. It is endemic to San Clemente Island, one of the Channel Islands of California, where it is known from about twenty occurrences. Its habitat includes moist, rocky, seaside grassland. It is a perennial herb growing from a corm. It produces two or three keeled, lance-shaped leaves up to 100 centimeters long by three wide. The inflorescence arises on an erect stem up to 90 centimeters tall and bears an umbel-like cluster of many flowers. Each flower is a funnel-shaped lavender or

Senecio pattersonensis is an uncommon species of flowering plant in the aster family known by the common names Mono ragwort. and Mount Patterson senecio.

Orcuttia inaequalis is a rare species of grass known by the common name San Joaquin Valley Orcutt grass.

Bloomeria humilis is a rare species of flowering plant that is known by the common name dwarf goldenstar. It is endemic to San Luis Obispo County, California, where it is known from only one occurrence on the coastline near San Simeon.

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Lastarriaea coriacea is a species of flowering plant in the buckwheat family known by the common name leather spineflower. It is native to California and adjacent northern Mexico where it is a common plant of many habitat types. This is an annual herb forming a patch of stems growing flat on the ground or rising slightly to a maximum height near 15 centimeters. The small leaves are located basally, where the stems emerge from the ground. They are generally hairy and linear in shape, and not more than 3 centimeters long. The stems branch into wide inflorescences bearing pointed bracts and

Erigeron basalticus is a species of flowering plant in the family Asteraceae known by the common names basalt fleabane and basalt daisy. It is endemic to Washington state in the United States, where it is known only from the banks of the Yakima River and its tributaries in Yakima and Kittitas Counties. This perennial herb grows from a taproot and branching caudex, producing spreading or hanging stems up to 25 centimeters long. They are leafy, hairy, and glandular. The leaves have wedge-shaped or oval blades with three lobes and are hairy in texture. The hairy flower head contains white ray

Ceanothus maritimus, with the common name maritime ceanothus, is a species of shrub in the buckthorn family Rhamnaceae. It is endemic to San Luis Obispo County, California, where it is known from only a few occurrences in the vicinity of Hearst Ranch. It shares the same range as the similarly rare Ceanothus hearstiorum, growing on the coastal bluffs.

Ceanothus hearstiorum is a species of flowering shrub known by the common names Hearst Ranch buckbrush and Hearst's ceanothus. This Ceanothus is endemic to California, where it grows wild only on the hilly coastline of San Luis Obispo County.

Brodiaea nana is a species of plant in the subfamily Brodiaeoideae. It is endemic to the Sierra Nevada.

Oreocarya crymophila is a perennial plant in the family Boraginaceae. It is commonly called subalpine cryptantha.

Hazardia stenolepis, the serpentine bristleweed, is a North American species of shrub in the daisy family. It has been found only in California in the western United States, and in Baja California in northwestern Mexico. Hazardia stenolepis is a shrub up to 100 cm (39 in) tall. The plant produces numerous flower heads in a dense, elongated array at the top of the plant. Each head contains 8-10 disc flowers but no ray flowers. The species sometimes grows on serpentine soils.

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Streptanthus lasiophyllus, many synonyms including Guillenia lasiophylla, is a species of mustard plant known by the common names California mustard and slenderpod jewelflower. It is native to western North America from British Columbia to northern Mexico. It can be found in a variety of habitats such as desert flats, gravelly areas, limestone rocks, talus slopes, sandy banks, and grassy fields. This is a thin-stemmed erect annual herb with long lobed, toothed leaves surrounding the base of the plant and smaller leaves lining the stem. The top of the plant is occupied by an inflorescence of

Streptanthus anceps, synonyms Caulanthus anceps and Guillenia lemmonii, is a species of flowering plant in the family Brassicaceae, known by the common name Lemmon's mustard. It is endemic to California, where it grows on open slopes and plains in the Central Coast Ranges and adjacent Central Valley. It can generally be found in areas with alkaline soils.

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