ROSACES. 109 



HAB. Woods. Penn. to Virg. Pursh Aug. 24- Flowers 

 small, yellow. Perhaps a mere variety of the former. 



12. ROSA. Linn. 



Calyx urceolate, fleshy, contracted at the orifice, 5-cleft. 

 Petals 5. Stamens numerous. Carpels numerous, bony, his- 

 pid, included in the fleshy tube of the calyx. 



Icosandria. Polygynia. 



* Styles cohering in a column* Fruit ovate or subglobose. 



1. R. rubifolia Brown : stem ascending ; branches glabrous ; prickles 

 few falcate ; leaves ternate, ovate-lanceolate, serrate, pubescent be- 

 neath ; stipules narrow, entire ; peduncles and calyx hispid ; flowers 

 subsolitary ; lobes of the calyx ovate, short, simple ; styles cohering 

 in a tomentose club-shaped column, as long as the stamens ; fruit pisi- 

 form. 



HAB. Shores of the Western lakes. W. to Miss. July. ^>.~ 

 Floicers very numerous, changing white to different shades of 

 red, sometimes in a corymb. 



** Styles free mostly included. Fruit globose or globose-depressed. Sti- 

 pular prickles usually in pairs. 



2. R. lucida Ehrh. : prickles recurved or none ; leafets 5 9, lanceo- 

 late-elliptic, coriaceous, obtusely serrate, shining ; stipules dilated, 

 large, smooth, serrulate ; peduncles somewhat hispid ; segments of 

 the calyx entire, appendaged, spreading but not deflexed ; flowers most- 

 ly in pairs ; fruit globose-depressed, hispid or smooth. 



HAB. Mountain swamps. N. Y. to Car. July. fp. Shrub 3 4 

 feet high. Flowers large, red. Petals emarginate. Fruit red. 



Swamp Rose. 



3. R. nitida Willd. : arms crowded, slender subequal ; leafets 5 9, 

 rigid, lanceolate, shining ; stipules large, finely serrulate ; lobes of the 

 calyx spreading ; fruit subglobose, shining, red. 



HAB. In Penn. MM. T>. A low shrub. Perhaps a variety of 

 the former. 



4. R. paroiflora Ehrh. : prickles straight, horizontal, needle-shaped 

 or none ; leafets 5 9, lanceolate, smooth, coarsely serrate, flaccid ; 

 stipules large, subdenticulate ; fruit depressed-globose and with the pe- 

 duncle of the calyx very long, appendaged. R. caroliniana Mich. 



HAB. In woods. N. Y. to Car. W. to Lake Superior. June, 

 July. T?. Shrub 3 feet high. Flowers in pairs. Petals large, 

 red, broadly obovate, emarginate. There are a number of varie- 

 ties of this species. 



5. R. Carolina Linn. ; prickles recurved, often wanting ; leafets 5 9, 

 coriaceous, lanceolate or obovate, serrulate, approximate, glaucous be- 

 neath ; stip ules long, with an involute margin ; flowers mostly in 



