Canada's Plant Hardiness Site

Asteraceae daisy family
Nabalus alatus Hook.
En: western rattlesnakeroot, wingleaf rattlesnakeroot, western white lettuce;
Fr: prenanthe ailee

• [=Prenanthes alata (Hook.) D.Dietr.]
• [=Prenanthes hastata (Less.) A.Nelson & J.F.Macbr., nom. illeg. hom., non Thunb.]
• [=Prenanthes lessingii Hultén]
• [=Sonchus hastatus Less.]