Allium triquetrum

Three cornered leek

Family: Alliaceae · Type: perennial · Not Native

Three cornered leek is a naturalized perennial found in northern California Coast, Klamath Ranges, and central California Coast bioregions in shady, somewhat disturbed places at elevations below 100 meters. Flowering from March to April, this plant produces delicate white flowers in bell-shaped clusters hanging from one-sided stems. Growing with distinctively sharp three-cornered stems 10 to 40 centimeters tall, it emerges from small ovoid bulbs with thin, yellowish-brown outer coats. Its leaves are 2 to 3 in number, flat and roughly equal in length to the stem, spreading from the base. This invasive plant has pendant flowers 10 to 18 millimeters long with lanceolate white perianth parts that create a graceful, nodding appearance.

Habitat: Locally common. Shady +- disturbed places

Bloom period: Mar-Apr

Elevation: < 100 m

Bioregions: NCo, KR, CCo

California counties: Sacramento, Marin, San Francisco, Sonoma, San Bernardino, Riverside, Alameda, Del Norte, Humboldt, Mendocino, San Mateo, Santa Clara, Yolo, Tehama, Contra Costa, Napa, Trinity, San Luis Obispo, Monterey, San Joaquin, Tuolumne, Santa Cruz

Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Jepson eFlora, Cal-IPC, and more.