1 64 Nettle (Urticacece). [No. 24 



Found, in rich woods from Pennsylvania to Georgia, and 

 west to Minnesota and Kansas. 



A woody vine with twining stems, sometimes two inches 

 thick, that climb to a height of thirty or forty feet ; very 

 ornamental and useful in cultivation for arbors and screens. 

 The root is aromatic and stimulant like ginger. 



No. 24.— Family URTICACECE. (Nettle Fam.) 



Genus Humulus, L. 



Fig. 80.— Hop. H. Liipidus, L. 



Flowers, small, greenish, in clusters. The staminate and 

 the pistillate forms are in different plants ; the stamin- 

 ate, with five sepals and five erect stamens opposite 

 them, in loose very many-blossomed clusters from the 

 axils of the leaves ; the pistillate, with one sepal, which 

 is wrapped around the seed-case, in short spikes with 

 large scales. June, July. 



Leaves, variable, usually two to four inches in length, sim- 

 ple, opposite, toothed, and mostly three- or five-lobed, 

 very rough backward on the upper surface. Stipules, 

 persistent. 



Fruit, one-celled, one-seeded. An achene wrapped in the 

 enlarged scale-like calyx. 



Found, only in rich soil, from New England westward, 

 and southward in the mountains to Georgia. Also,, 

 extensively in cultivation for the markets. 



