308 ICOSANDRIA. POXYGYNIA. 



Order V.— POLYGYNIA. 



344. ROSA. L. (Rose.) 



Calix nrceolate, carnose, contracted at tiic 

 » orifice, border 5- cleft. Petals 5. Seeds many, 

 hispid, attached to the inside of the calix. 



Shrubs for the most part aculeate, prickles scattered; 

 leaves alternate, pseudopinnate, in one species simple; 

 lower part ofthe petiole alated by the decurrent stipules; 

 flowers solitary or subcorymbose and terminal, mostly 

 large, in the gardens otten "double. 



Species. 1. U. blanda. 2. parviflora. 3. nidda. At. 

 lucida. 5. gemella. 6. Lvonii. 7. setigera. 8. Carolina. 

 9. rutHfolia. A very line flowering species, but nearly 

 scentless; abundant round Detroit, and through ail the 

 western states to Louisiana. 10. Uvigata. 11. nibigiiio- 

 sa. Ji. suaveolens. Ph. Merely naturalized; certainly 

 not native. 



A genus ot near 50 species chiefly indigenous to Eu- 

 rope, there are also a few species in Japan and India. 



345. RUBUS. L. (Bramble.) 



Calix 5 -cleft inferior. Fetals 5. Berry com- 

 . pound; acini 1 -seeded. 



Shrubby sufTruticose or herbaceous plants; stems most- 

 ly aculeate, often annual, more or less recurved or sar- 

 mentosely procumbent, the bcibaceous species destitute 

 of armature; leaves simple, ternate, digitate, or pinnately 

 diyided; flowers terminal, racemosely paniculate or soii- 

 tiJiy, rarely subcorymbose; fruit edible, red or black, 

 sometimes yellowish. 



Species. 1. R Idaus. Indigenous throughout Upper 

 Ca'iada and en thi borders of the lakes of the St Law- 

 rer.ce. 2. occidenia'is. 2. rdltosns. Leaves in 5s. digi- 

 tate, elliptic acuminate, sharply serrate, partly villous on 

 both sides. 4. slrigosus. 5. canadensis. 6. cnneifoUus. 

 Ph. Very prickly, but producing often an abundant and 

 v.ell flavoured fruit. This species grows always in sandy 

 woods, way -sides and fields, profiting by the dtslruction 

 |. and removal of the trees which formerly restrained it. 

 Mr. P. must not have seen this plant in i)erfection, other- 

 wise he would not have remarked that *' the berries were 

 hard and dry." 7. hispidus. 8 triviaUs. Dewberry. 9. 

 Jiagellaris- 10. hiermis. 11. spectubi'ds. 12. odoratus. 

 (On tiic banks of Wishahikon creek near Philadelphia); 

 abundant tliroughout the mcunta'.ns, always amidst rocks. 

 13. *pa'rviJlorus. Shrubby and unarmed; leaves simple, 

 palmalely lobed; peduncles 2 or 3-flowered: flowers 

 small; segments of the calix villous, ovate, abruptly acu- 



