Allium diabolense
 Allium diabolense common name serpentine onion or devil's onion is a species of wild onion endemic to central California where it is known from the Coast Ranges and the Transverse Ranges. It grows on serpentine soils at elevations from 500–1500 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 one leaf which is longer than the stem.