j{fO€ANDRlA ItfONOGYNJTA, 



53? 



CLASS XIL, 



ICOSANDRIA. 



MOJS^O G IWi.i. 



'•mr. CACTUS. 



308. PHILADFXPHITS. 



CHUYSOBALANUS 



^09 



311 



•310. PRUNUS. 



DECODON. 

 313. LY I'HRUM. 

 815. CUPHEA, 



ni^FEJST^ G rjvij]. 



314. 



315. 

 0^16. 



FOTHERGILLA 



CRAT.^ilGUS. 



SORBUS. 



617. SESUVIUM. 



318 



A RON I A. 



319. PYRUS. 



320. SPIRiEA. 

 521. GILLENIA, 



TOLYGTXU.- 



522. 



S23. 

 324- 

 325. 

 526. 



327. 



ROSA. 

 RUBU9. 



dalibarda; 



GEUM. 



POTENTILLA. 

 F' AG ARIA. 



328. Cx\LYCANTEL-§, 



CACTUS. Gen. pl. 



Oalyx superus, mono- 



pbyllus, imbricatus. 



Pe^ 



Calyx superior, mono 

 phyllous, imbricate. Pe^ 



tula plurima, multiplici I taU numerous, inserted 



serie inserta. Stigma in several rows. 



Stig- 



niultifidum. Bacca l-lo- j ma many cleft. Berry i 



€ulaiis, polysperma. 



celled, many seeded. 



i. 



C. 



Opuntia. 



rticulato-prolifei 

 > compressis, ol> 

 spinis setaceis. 



2. p. 943. 



Articulately prolifei 

 ai'ticidations compre< 



obovatc ; 



spines setacc- 



ous. 



vatis ; 



8p. pi. 



Walt. p. 146. Mich. 1. p. 282. Pursh. 1. p. 327. Nutt. 1. p. 29G. 



Plant perennial, erect, procumbent or prostrate ; articulations pro- 

 <lucinw on their margins flowers, fruit, and new articulations, armed 

 with double spines, some long, subulate, strong, hairj at tlieir base, 

 others very small and setaceous. Floicns sessile, yellow, J'ruit 

 obovate, umbilicate, pulpy, eatable. Seeds numerous, immersed iu 



tlie crimson pulp. 



It is nrobabie that there are now three distinct species on the sea 

 ci^st -cr tlie Soutltera States covered under this naiivs. ]fft .the sun- 



U 3 



