Anne Elliott's photos with the keyword: Hooker's Thistle

Hooker's Thistle / Cirsium hookerianum

01 Oct 2010 175
Photographed this native Hooker's Thistle out in Kananaskis, near the parking lot, when we went on the Picklejar Lakes hike on August 6th. Also known as White Thistle, it grows in meadows and open woods, July-September. The species name comes from Sir William J. Hooker (1785-1865), director of the Royal Botanical Gardens at Kew, in England.

Hooker's Thistle

21 Jul 2009 175
Hooker's Thistle, also known as White Thistle, grows July-September in meadows and open woods. A native thistle, it has narrow, spine-tipped bracts which are covered in woolly to cobweb-like hairs. This particular plant (and many other specimens of it) was growing on the Gunnery Pass Trail, Kananaskis, where three of us hiked three days ago. "The species name commemorates British botanist Sir William J. Hooker (1785-1865), director of the Royal Botanic Gardens at Kew. Between 1829 and 1840, he made numerous plant collections across Canada and the United States." From Plants of Alberta, by France Royer and Richard Dickinson.