Allium bisceptrum, also known as the twincrest onion, is a high elevation plant native to western United States. It is a perennial that thrives under damp and shady conditions or open meadows in California, Arizona, New Mexico, Nevada, Oregon, Washington, Idaho, and Utah. Allium bisceptrum is used sometimes as food flavoring as their leaves may be very strong and odorous. Natives pray before picking the leaves of this plant. Many animals in the region, including elk, black bears and prairie dogs eat the bulbs of the wild onions. In California, A. bisceptrum is distributed throughout the counties of Alpine, El Dorado, Glenn, Inyo, Lassen, Mendocino, Mono, Modoc, Mariposa, Nevada, Plumas, San Bernardino, San Diego, Shasta, Sierra, Trinity, Tulare, and Tuolumne. It is also widely distributed in Nevada, Utah, Arizona, southeastern Oregon, and southern Idaho with isolated populations reported from northern Idaho and from southeastern Washington (Franklin County). The twincrest onion is a perennial at altitudes ranging from 2000 to 2900 meters. They grow up to anywhere between ten to forty cm high. The onion bulbs are round and egg-shaped. The bulbs have a light tint and when cut, has a powerful odor. Their flower heads are about 10-15 mm in length. The flowers are a lightly tinted purple. Each flower head contains usually six petals with pointed tips. Their flat leaves usually come in pairs of two or three and give off an odor when scratched. Habitat and ecology. Allium bisceptrum is found in forests dominated by yellow pine, red fir, and lodgepole pine, and wetland-riparian habitats in California. The twincrest onion thrives near streambanks and meadows. It is also likely to occur in wetlands.