A GUIDE TO THE WILD FLOWERS 269 



and waste places, Newfoundland to Virginia, and westward. 

 June-September. Fig. 824. 



825. Leaves or flower heads not prickly. (Daisy Family con- 

 tinued.) Nos. 826-846. 



Flowers white, or dirty white no. 839 



Flowers green, yellow, or greenish-yellow no. 833 



Flowers pink, or purplish-pink 



Salt marsh plant Salt Marsh Fleabane no. 826 



Not salt marsh plants 

 Flower heads in spike-like clusters 

 Flower heads distinctly stalked Button Snakeroot no. 827 

 Flower heads stalkless or very short stalked 



Flower heads about Yz in. thick, few 



Blazing Star no, 828 



Flower heads about Y^ in. thick, numerous 



Gay Feather no. 829 



Flower heads in other sorts of clusters 

 Plants 3-9 ft. high 

 Leaves narrow, minutely toothed .... Ironweed no. 830 



Leaves broadly oval, toothless Burdock no. 831 



Plants 1-2 ft. high Knapweed no. 832 



826. Salt Marsh Fleabane. Pluchea campJiorata. A finely 

 hairy, sticky annual, 1-23/2 ft. high. Leaves alternate, oval 

 or oblong-oval, narrowed at the base, toothed, the lower ones 

 stalked, the upper stalkless. Flowers all tubular, the heads 

 purplish-pink, in rather sparse leafy clusters. In salt marshes, 

 Mass. to Florida, and Texas. September. Fig. 826. 



827. Button Snakeroot. Lacwaria scariosa. (Liatris scar- 

 iosa.) An erect, usually unbranched and mostly hairy plant, 

 1-4 ft. high. Leaves oblong or lance-oblong, slightly broader 

 towards the tip, 3-8 in. long, toothless, profusely spotted, the 

 uppermost smaller and narrower. Flower heads decidedly 

 stalked, arranged in a long spike-like cluster, bluish-purple. 

 In dry places, Maine and Ontario to Florida, and westward. 

 August. Fig. 827. 



828. Blazing Star. Lacinaria squarrosa. (Liatris squarrosa.) 

 A somewhat similar plant, but lower, the leaves narrower, 

 and the purple flower heads, which are about j/2 in. wide, 



