CLASS XII. ORDER I. 203 



221. RuBus. Calyx five cleft; corolla five petalled; 

 berry composed of several one seeded grannlatiotis. 



222. Dalibarda. Calyx spreading, five cleft; petals 

 five; pistils from five to eight; styles deciduous; fruit 

 juiceless. 



223. Fragaria. Calyx ten cleft ; corolla five pe- 

 talled ; seeds smooth, fixed to a deciduous, berry-like 

 receptacle. 



224. CoMARUM. Calyx ten cleft; corolla five pe- 

 talled; seeds smooth, fixed to an ovate, spongy, per- 

 manent receptacle. 



22.5. PoTENTiLLA. Calyx ten cleft ; corolla five 

 petalled ; seeds naked, wrinkled, afiixed to a small, 

 juiceless receptacle. 



226. Dryas. Calyx eight or ten cleft; segments 

 equal ; petals from five to eight ; seeds from five to 

 eight with long feathery awns. 



227. Geum. Calyx ten cleft; corolla five petalled ; 

 seeds with a jointed, bent awn ; receptacle columnar. 



TCOSANDRIA. 

 MONOGYNIA. 



214. CACTUS. 

 Cactus opuntia. L. Prickly Pear. 



Proliferous in joints, which are compressed, ovate; 

 spines setaceous, fruit succulent, smooth. 



A fleshy plant, destitute of proper leaves, the place of which is 

 supplied by large compressed joints, three or four inches long, 

 prickly with small spines. Flowers large, yellow, growing from 

 the margins of the joints. Stamens numerous. Fruit obovate, 

 eatable. — Found at Nantucket. — June, July. 



