Allium tolmiei (Tolmie's onion) is a plant species native to Idaho, eastern and central Oregon, southeastern Washington, northwestern Nevada and northeastern California. It occurs on mountains and scrublands at elevations of . It was discovered by and named for Dr. William Fraser Tolmie. Allium tolmiei produces ovoid to oblique bulbs up to long, the bulbs generally disappearing at flowering time but then reforming later. Flowers are bell-shaped, up to across; tepals white to pink with reddish midribs; anthers purple or yellow; pollen yellow. Two varieties are currently recognized: Allium tolmiei var. tolmiei - scapes tall; stamens shorter than tepals Allium tolmiei var. persimile Ownbey (syn Allium persimile (Ownbey) Traub & Ownbey) - scapes tall; stamens longer than sepals—known only from the Seven Devils Mountains in Idaho References tolmiei Flora of the Great Basin Flora of the Northwestern United States Flora of California Flora of Nevada Endemic flora of the United States Onions Plants described in 1950 Taxa named by John Gilbert Baker Flora without expected TNC conservation status