^2 A GUIDE TO THE WILD FLOWERS 



Wash., N. J., Pa. and Kan. Native of Europe. Fig. 203. See 

 also No. 654. 



204. Tear-thumb. Tracaulon sagittatum. (Polygonum sagit- 

 tatum.) (Polygonaceae.) Scrambling over bushes, with a 5- 

 angled, very rough stem. Leaves arrowhead-shaped 1/^2-^ 

 in. long, about Ys as wide. Flowers scanty, greenish or rose 

 colored, in a terminal cluster. Fruit dry, 3-angled, scarcely 

 % in. long. August. Nova Scotia, south to Florida and west- 

 ward. Fig. 204. A related species with halberd-shaped, 

 larger leaves, Tracaulon arifolium, is common from New 

 Brunswick to Minn, and Ga. See No. 294. 



205. FALSE BUCKWHEAT. TINIARIA. 



Climbing or trailing vines with smooth stems. Leaves 

 heart-shaped at the base, pointed at the tip. Flowers small, 

 in clusters and followed by a 3-angled dry fruit. {Poly- 

 gonaceae.) Four or five species are known, which are dis- 

 tinguished by technical characters. One of the co"'*--''^''^'- ^^" 

 False Buckwheat or Corn Bindweed. It'^H^ ^CZi. 

 volvulus. {Polygonum Convolvulus.) A scrambling vine, 

 scarcely 3 ft. long, and usually branched, with the flowers 

 greenish, small, and in hanging clusters. Leaves long-stalked, 

 i>4-3 in. long, narrow pointed at the tip, heart shaped at 

 the base. August. Nearly throughout North America. Native 

 of Europe. See No. 294. 



