300 



WEEDS AND USEFUL PLANTS. 



gin embracing the ovary. Nuts roundisb-ovoid, inclosed in the persis- 

 tent truncate calyx. Cotyledons linear, spirally involute. 



1. H. Ln'pulus, L. Leaves mostly S-Iobed, cordate at base, petiolate, 

 scabrous. 



Hop. Hop-vine. 



Fr. Houblon. Germ. Der Hopfen. Sj)an. Hoblon. 



Root perennial, branching;. Stem 10-15 or 20 feet long, several from the same root (or 

 rfeizoma), slender, volubile, somewhat angular and mostly twisted, retrorsely aculeate, 

 with slender branches above. Leaves 3-5 inches long, generally opposite — the upper 

 ones often alternate and not lobed, — all very scabrous on the upper surface ; petioles 1-2 

 or 3 inches long ; stipules ovate-lanceolate, connate below, free at summit. Staminate 

 fioivers in oblong panicles. Pistillate flowers in pendulous ovoid-oblong bracteate strobiles, 

 or aments, which are proverbially numerous and crowded (" as thick as hops "), 1-2 in- 

 ches long at maturity ; bracts orbicular or broadly-ovate, with a short abrupt acumina- 

 tion. 



Cultivated, but indigenous in most parts of the United States. Fl. July. Fr. Septem- 

 ber. 



Obs. The value of the Cones, or Aments, of the pistillate plant, is 

 well known to every house-keeper ; and it is cultivated for culinary 



Fig. 190. Tlie Hop (Hamulus Lupulus), a branch of a ftaminate plant, reduced. 191. A 

 separate staminate flower. 192. A young pistillate ament. 193. A ripe ament or strobile 

 194. A much magnified grain of Lupulin. 



