A GUIDE TO THE WILD FLOWERS 293 



V 



Leaves of an oval type 



Stem smooth or only slightly hairy 



Wild Sunflower no. 905 



Stem rough and hairy Jerusalem Artichoke no, 906 



Leaves lance-shaped or lance-oblong Giant Sunflower no. 907 



900. Beggar-ticks. Bidens frondosa. A slender stemmed 

 annual, almost weedy, 2^-3 ft. high. Leaves stalked, divided 

 into 3-5 sharply-toothed segments, or the uppermost un- 

 divided. Flowers yellow, the heads numerous, slender stalked, 

 and composed only of tubular flowers, followed by a small 

 2-pronged fruit, the prongs downwardly barbed and diffi- 

 cult to detach from clothing. In wet places or in fields. New 

 Brunswick to Florida, and westward. July-October. Fig. 900. 

 There are several close relatives. See No. 952. 



901. Bur Marigold. Bidens cernua. Not unlike No. 900, 

 but taller, with none of the leaves divided, and with obvious 

 yellow rays to th^ nodd ing .flower.h£aidL In wet places. Nova 

 Scotia to No. Carolina, and westward. July-October. Fig. 



901. Several closely related species are known but are diffi- 

 cult to identify. See No. 952. 



902. Elecampane. Inula Helcnium. A coarse European 

 weedy plant with several, mostly unbranched stems from 

 each root, often 4 ft. or more high. Leaves oblong-oval, rough 

 above, very hairy beneath, finely toothed, 10-15 in. long, and 

 stalked, the upper smaller and stalkless. Flowers yellow, the 

 heads mostly solitary, about 3 in. wide. In fields and road- 

 sides, Nova Scotia to So. Carolina, and westward. August 

 Fig. 902. 



