Canada's Plant Hardiness Site

Asteraceae daisy family
Cirsium hookerianum Nutt.
En: Hooker's thistle, white thistle;
Fr: chardon de Hooker

• [=Carduus kelseyi Rydb.]
• [=Cirsium kelseyi (Rydb.) Petr. 1917, non (Rydb.) Rydb. 1917]