Allium campanulatum is a species of wild onion known by the common name dusky onion. This is a flowering plant native to the western United States from Washington to California as well as Nevada. The dusky onion grows from a gray-brown bulb one to two centimeters wide which may extend tiny rhizomes and produce small daughter bulblets. It rises on a stout stem and has usually two long, drooping onion leaves. Atop the stem is an flower cluster of 10 to 50 flowers. Each flower is half a centimeter to one centimeter wide and is pink, purple, or less often white, and each tepal has a dark-colored base. The petals are variable in shape, from narrow and very pointy to spade-shaped. The dusky onion grows in low mountains, especially in dry areas.