Dale W. McNeal

Allium abramsii is a species of wild onion known by the common name Abrams' onion.

Allium tuolumnense is a rare species of wild onion, known by the common name Rawhide Hill onion. It is endemic to Tuolumne County, California, where it is known only from a small section of the Sierra Nevada foothills at Rawhide Hill and the Red Hills. It is a plant of serpentine soils.

Allium shevockii is a rare species of wild onion known by the common name Spanish needle onion. It is found only in a limited area in the southern Sierra Nevada of California.

Allium munzii, also known by its common name, Munz's onion, is a bulb forming perennial herb endemic to Western Riverside County, California. This flower is characterized by its umbrella-like shape and flower clusters. Allium munzii is listed as endangered under the Endangered Species Act as of 1998. There are thirteen known populations in existence, and the latest population count stands at 20,000-70,000 individuals, counted in 1998. Major threats to this flower include urbanization, agriculture, clay mining, and other human activities. A recovery plan for Allium munzii is not in motion but

Allium jepsonii is a species of wild onion known by the common name Jepson's onion, honoring renowned California botanist Willis Linn Jepson.

Allium serra is a California species of wild onion known by several common names, including jeweled onion, pom-pon onion, and serrated onion. It favors hard soils with rock and clay, including serpentine soil. It is found in the Coast Ranges of central and northern California, from Merced County to Humboldt County. Allium serra plant produces a small herringbone-patterned bulb an average of one centimeter in diameter. It has a long stem on which it bears a tightly bunched umbel of flowers. The attractive bright pink flowers are thimble or bell-shaped, often iridescent when new and becoming

Allium diabolense (serpentine onion or devil's onion) is a species of wild onion endemic to central California in the Coast Ranges and the Transverse Ranges. It grows on serpentine soils at elevations of 500 to 1500 m, from Kern and Ventura Counties north to Stanislaus and Santa Clara Counties. Allium diabolense grows from a reddish-brown bulb just over a centimeter long. It produces a stem up to 20 centimeters tall and a single leaf, which is longer than the stem. The inflorescence contains up to 50 dark-veined, pink-tinted white flowers. Its anthers and pollen are yellow.

Allium sharsmithiae, called the Mount Hamilton onion or Helen Sharsmith's onion, is a rare species of wild onion endemic to a small region in California. It is found on serpentine soils in the vicinity of Mount Hamilton, in the Diablo Range south of San Francisco Bay in Santa Clara, Alameda and Stanislaus Counties.

Allium denticulatum is a species of wild onion known by the common name toothed wild onion. It is endemic to southern California, where it grows in the western Mojave Desert, the adjacent Tehachapi Mountains, the southern Sierra Nevada, and the Palomar Mountains. It is reported from Kern, San Bernardino, Riverside, Ventura, San Diego Counties.

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