| Cascade onion | |
|---|---|
 | |
Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Amaryllidaceae |
| Subfamily: | Allioideae |
| Genus: | Allium |
| Species: | A. cratericola |
| Binomial name | |
| Allium cratericola | |
| Synonyms[2][3] | |
| |
Allium cratericola is a species ofwild onion known by the common nameCascade onion. It isendemic toCalifornia, where is an uncommon member of the flora in several of the state's mountain ranges, including the northern and southernCalifornia Coast Ranges, the westernTransverse Ranges,Klamath Mountains, and theSierra Nevada foothills. Its range covers much of the state, fromRiverside County toSiskiyou County.[4][5][6]
Allium cratericola grows a short stem up to 10 centimetres (4 in) tall from a brown-coated oval-shapedbulb. There are one or two long, pointed leaves up to four times the length of the stem. The umbel contains up to 20 flowers clustered densely together. Each flower is bell-shaped, up to 15 mm (5⁄8 in) across;tepals white, pink or purplish with a dark purple-brown midvein; anthers and pollen are yellow.[4][7][8][9]
