270 A GUIDE TO THE WILD FLOWERS 



essentially stalkless, and comparatively few. In dry places, 

 Ontario to Florida, and westward. June-September. 



829. Gay Feather. Lacinaria spicata. {Liatris spicata.) Re- 

 sembling both No. 827 and No. 828, but the flower heads 

 smaller, stalkless, and very numerous, in a slender spike 6- 

 15 in. long. Leaves narrow, grass-like. In moist places, On- 

 tario and Mass. to Florida, and westward. September. Fig. 

 829. 



830. Ironweed. Vernonia novehoraccnsis. A coarse, very 

 tough-stemmed weed, 3-7 ft. high. Leaves alternate, hairy or 

 smooth, stalked, lance-linear, tapering both ends, 4-9 in. long, 

 minutely toothed. Flowers all tubular, deep purple, with heads 

 in a large terminal, much branched cluster. In moist open 

 places, Mass. to No. Carolina, and westward. August. Fig. 

 830. 



831. Burdock. Arctium Lappa. A much branched, common 

 weed, 4-9 ft. high. Leaves broadly oval, toothless, mostly 

 rounded or slightly heart-shaped at the base, white-hairy on 

 the under side, the largest often i ft. long. Heads clustered, 

 not numerous, purple, persisting after flowering, and the 

 bristly bracts of the head making the burs difficult to re- 

 move from clothing, or the fur of animals. In waste places, 

 nearly throughout North America, especially the related 

 species, A. minus. July-October. Fig. 831. A. minus differs 

 in having smaller heads than A. Lappa in which they are 

 about I in, in diameter. 



