The Common Thistle.
Cnicus lanceolatus, Wild. Sp. Pl. vol. iii. p. 1666. Pursh, Flora Amer. vol. ii. p. 506. Smith, Engl. Bot. vol. iii. p. 388.—Syngenesia Polygamia æqualis, Linn. Cinarocephalæ, Juss.
This well known species of Thistle, common in the temperate and colder parts of both continents, it is unnecessary to describe.