Carduus crispus L.

• Authority

  Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

• Family

  Asteraceae

• Scientific Name

  Carduus crispus L.

• Description

  Species Description - Biennial, 6-20 dm, rather weakly spiny, the stem brittle; lvs broader and less deeply cleft than in no. 2 [Carduus acanthoides L.], cottony-tomentose beneath at least when young; heads clustered at the ends of the often short branches, similar to those of no. 2, but less pungent and avg a little smaller, the invol 1.2-1.7 cm; peduncles often wingless in the distal several mm; 2n=16. Roadsides and waste places; native of Eurasia, sparingly intr. in our range, chiefly about the larger ports. June-Sept.

• Common Names

  welted thistle