Flora of Nort1
- Flora of North America, Hooker's or white thistle, Cirsium hookerianum Nutt. (wikipedia.org)
Thistle1
- Cirsium hookerianum, common name Hooker's thistle or white thistle, is a North American species of thistle native to western Canada and the northwestern United States. (wikipedia.org)
Perennial1
- Cirsium hookerianum is biennial or perennial herb up to 150 cm (60 inches) tall, with a large taproot. (wikipedia.org)