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 .5". glaiica, but seldom in masses, as in that 

 species. 



Var. qziadr angular is, G., has the branches — especially 

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

 mon westward. 



