woolly thistle

/ˌwʊli ˌθɪsəl/

Definitions of woolly thistle

1. noun

   biennial Eurasian white hairy thistle having pale purple flowers; naturalized in North America
   synonyms: Onopordon acanthium, Onopordum acanthium, Scotch thistle, cotton thistle

   type of:

   thistle

   any of numerous plants of the family Compositae and especially of the genera Carduus and Cirsium and Onopordum having prickly-edged leaves
2. noun

   thistle of western North America having white woolly leaves
   synonyms: Cirsium flodmanii

   types:

   Cirsium eriophorum, European woolly thistle

   woolly thistle of western and central Europe and Balkan Peninsula

   type of:

   plume thistle, plumed thistle

   any of numerous biennial to perennial herbs with handsome purple or yellow or occasionally white flower heads