176 Lily (Liliacece). [No. 25 



A low woody vine, with the stem more or less angled, 

 and usually beset with a few prickles toward the base ; six 

 feet or less in length. 



Fig. 83. (4). Cat-Briar. Green-Briar. Horse-Briar. S. 



rotundifblia, L. 



Flowers, in six- to twelve-blossomed clusters. Cluster- 

 stems, no longer, or, sometimes, only slightly longer 

 than the leaf-stems ; flattened. March, June. 



Leaves, very variable in size, usually two to three inches 

 in length, egg-shape to round, often broader than 

 long ; green on both sides, smooth, entire ; five- or 

 seven-veined, the three middle veins the strongest, 

 oftenest leathery. Base, slightly heart-shape or 

 rounded. Apex, abruptly short-pointed. Tendrils, 

 strong, from the wings of the leaf-stem. Leaf-stem, 

 one quarter to one half inch long. Prickles, stout and 

 broad-based. 



Fruit, round, blue-black, one- to three-seeded, often cling- 

 ing throughout the winter. 



Found, very common, especially in low, damp ground, 

 from Canada southward to Georgia, and westward. 



A woody vine, with the stem round or nearly so, and 

 the branchlets often more or less four-sided ; ten to forty 

 feet in length ; armed usually throughout with stout 

 prickles. Stem and branches, oftenest yellowish-green. 

 Root-stock running for long distances just under the sur- 

 face of the ground, sparingly furnished with tubers, like 

 those of .51 glauca, but seldom in masses, as in that 

 species. 



Var. quadrangular is, G., has the branches especially 

 the smaller ones strongly four-sided, and is more com- 

 mon westward. 



