ICOSANDRIA.-POLYGYNIA. 207 



ment., procAimb. or reclin. ; leaf., thin; pet. short; 

 fr. dark red. 



6. R. occidental : branches and petioles glaucous and 



aculeate ; leaves ternate ; leaflets ovate-acuminate, 

 somewhat lobed, coarsely serrate, hoary tomen- 

 tose beneath ; petioles terete ; racemes terminal. 

 HAB. Rocky places. May — Aug. Sterns long, si end. ; 

 racem. long ; fr. black, round. 



7. R. hispidus: sarmentose-procumbent ; stems, peti- 



oles and peduncles very hispid with rigid bristles ; 

 leaves ternate ; leaflets incisely serrate, naked ; 

 the intermediate one pedicellate. 



HAB. Pennsylvania. June. 

 3. R. trivialis :" sarmentose-procumbent; petioles and 

 peduncles aculeate-hispid, with the prickles re- 

 curved ; stipules subulate ; leaves ternate and qui- 

 nate oval, acute, unequally serrate ; pedicels soli- 

 tary, elongated. 



HAB. Stony fields. May — June. Stems long ; leav . 

 subscmperv. ; fr. large, black. 

 .'•. R. odoratus: unarmed, erect, viscidly pubescent: 

 leaves simple, acute, 3— 5-lobed ; corymbs termi- 

 nal, divaricate ; calyx appendiculate ; petals nearly 

 round. 



HAB. Rocky places. June. Shrub 3—4 ft. high.: 

 fl. large, purp. ; fr. yellow, large. 



** Somewhat herbaceous. 



10. R. saxatilis /3. canadensis: herbaceous, pubescent .; 

 stems creeping; leaves ternate ; leaflets rhombic, 

 acute, incisely dentate, naked ; the terminal one 

 petiolate ; flowers somewhat in threes ; pedicels 

 elongated. 



HAB. Mountains. Fruit small, black. 



11. R. obovalis : stem becoming a little woody, hispid 

 with stiff hairs ; leaves ternale ; leaflets round- 

 obovate, serrate, naked; stipules setaceous; ra- 

 cemes subcorymbed, few flowered ; bracts ovate 

 pedicels elongated. 



HAB. Mountain swamps. May — July. Fr. with few 

 \ black, tweet, 

 1? R. ' /-us: herbaceous, small ; stem unarm 



