Anstruther Davidson

Allium burlewii is a species of wild onion known by the common name Burlew's onion. It is endemic to California, where grows in the granitic soils of several of the central and southern mountain ranges from Riverside and San Bernardino to Fresno and Monterey Counties, usually between 6,000 and 10,000 feet above sea level. Allium burlewii is a short-stemmed onion, from an oval-shaped bulb, with a scape rarely taller than 20 cm. It has a single long, pointed leaf up to 35 cm long. The inflorescence contains up to 20 dark-veined purple flowers each up to a centimeter long with dark purple

Allium monticola is an uncommon species of wild onion known by the common name San Bernardino Mountain onion. It is endemic to southern California, where it is found in the Transverse Ranges and the northernmost section of the Peninsular Ranges. It has been reported from San Bernardino, Los Angeles, Orange, Ventura and Santa Barbara Counties. Allium monticola generally grows in rocky areas at elevations 1400–3200 m. This onion grows from a bulb one or two centimeters long which often has daughter bulbs attached to it on stalks. The waxy stem reaches a maximum height near 25 centimeters and

Fritillaria pinetorum, the pinewoods fritillary or Davidson's fritillary, is an uncommon species of fritillary. It is endemic to California, USA, where it is found in shady mountain forests in the Sierra Nevada (from Sierra County to Kern County) and the San Gabriel Ranges from Santa Barbara County to San Bernardino County. There are also isolated populations in eastern Inyo County and in Modoc County.

Fritillaria ojaiensis is a rare species of fritillary known by the common name Ojai fritillary. This wildflower is endemic to California, USA, with a discontinuous distribution in northwestern and west-central parts of the state. It occurs in the western Transverse Ranges of Monterey, San Luis Obispo, Santa Barbara, and Ventura Counties, including the Santa Ynez Mountains, and the southern Santa Lucia Mountains. Additional populations have been found along the coast of Mendocino County approximately 400 miles to the north. The plant is named for the City of Ojai in Ventura County.

Fremontodendron mexicanum is a rare species of shrub in the mallow family known by the common names Mexican flannelbush, Mexican fremontia, and Southern flannelbush, that is endemic to the central Peninsular Ranges in Mexico and the United States.

Sedum niveum is a species of flowering plant in the family Crassulaceae known by the common name Davidson's stonecrop. It is native to southern California and northern Baja California, where it is known from several local mountain ranges. It grows in rocky, forested habitat. It is a succulent plant forming basal mats of spoon-shaped or oval leaves no more than a centimeter long. The small inflorescence grows up to 9 centimeters tall and bears several flowers with white petals tinged or veined with pink. The stamens have red or black anthers.

Frasera puberulenta (syn. Swertia puberulenta) is a species of flowering plant in the gentian family known by the common name Inyo frasera. It is native to the High Sierra Nevada of California, as well as the Inyo Mountains and White Mountains of eastern California, where its distribution extends just over the border into Nevada. It grows in dry mountain woodlands.

Eriogonum crocatum, the Conejo buckwheat or saffron buckwheat, is a species of Eriogonum, or wild buckwheat. It is endemic to the Conejo Valley and surrounding regions in Ventura County, California. It grows on open, dry hillsides, often in crags in rock faces.

Mentzelia montana, known by the common name variegated bract blazingstar, is a species of flowering plant in the family Loasaceae.

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Dudleya parva, known by the common name Conejo dudleya, is a species of deciduous succulent plant native to the Conejo Valley and surrounding regions. It blooms from May to June, and has vernal leaves. It is only found from the western end of Simi Hills along the Montclef Ridge to the Conejo Grade in Newbury Park.

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Dudleya anomala is a rare species of succulent plant in the family Crassulaceae commonly known as the Todos Santos liveforever. With a dense, cushion-forming habit, this leaf succulent is characterized by elongated stems, slightly sticky leaves, and bell-shaped flowers with white, spreading petals. This species is native to Baja California, Mexico, and is found primarily on islands and one coastal locality.

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