Genus 30. 



ROSE FAMILY. 



7. Rosa Carolina L. Swamp or Wild Rose. 

 Hip-tree. Fig. 2313. 



Rosa Carolina L, Sp. PI. 492. 1753. 



Bushy, I "-8 high, armed with rather distant stout 

 commonly recurved spines. Prickles not very abun- 

 dant, sometimes none ; stipules very narrow ; leatlets 

 5-9 (usually 7), varying considerably in outline, oval, 

 oblong, ovate-lanceolate or even obovate, i'-^' long, 

 finely and simply serrate, generally short-stalked, 

 acute or acutish at each end, pale or pubescent be- 

 neath ; nowers corymbose or rarely solitary, 2'-^' 

 broad ; calyx-lobes lanceolate, acuminate or dilated 

 above, rarely lobed, hispid-pubescent, spreading" or 

 reflexed, deciduous; styles distinct; fruit globose or 

 depressed-globose, about 4" high, glandular-hispid. 



In swamps and low grounds, Nova Scotia to Ontario, 

 Minnesota, Missouri, Florida and Mississippi. lune- 

 Aug. 



8. Rosa virginiana Mill. Low or Pasture Rose. Fig. 2314. 



Rosa virginiana Mill. Gard. Diet. Ed. 8, no. 10. 1768. 

 Rosa humilis Marsh. Arb. Am. 136. 1785. 

 Rosa parviftora Ehrh. Beitr. 4: 21. 1789. 

 Rosa liicida Ehrh. Beitr, 4; jj. 1789. 

 Rosa liumilis lucida Best, Bull. Torr. Club 14: 256. 

 1887. 



Bush)-, 6'-6 high, usually armed with slender 

 or stout, straight or curved infrastipular spines, 

 and more or less prickly. Stipules entire; leaflets 

 usually 5, sometimes 7, rather thin, ovate-oval or 

 obovate, dull or somewhat shining, coarsely and 

 siinply serrate, 6"-2' long, mostly acute or acutish 

 at each end, short-stalked or sessile, glabrovis or 

 pubescent beneath; flowers usually few or soli- 

 tary, 2-2' broad ; pedicels and calyx usually glan- 

 dular ; calyx-lobes lanceolate, acuininate, or di- 

 lated above, commonly lobed, spreading and 

 deciduous ; petals obovate. obcordate or sometimes 

 lobed; styles distinct; fruit globose or depressed- 

 globose, glandular-hispid, about 4" high. 



In dry or rocky soil, Newfoundland to Ontario, 

 Wisconsin, Missouri, Georgia and Louisiana. Our 

 commonest wild rose, consisting of many slightly 

 differing races, northern ones with stouter spines than 

 southern. .\ double-flowered form occurs in Penn- 

 sylvania and New Jersey. Dwarf wild rose. May- 

 July. 



Wild 



9. Rosanitida Willd. Northeastern Rose, 

 or Shilling Rose. Fig. 2315. 



Rosa nitida Willd. Enum. 544. 1809. 



Low, bushy, seldom over 2 high, the stems and 

 branches very densely covered with slender straight 

 prickles nearly as long as the slender infrastipular 

 spines. Stipules u.sually broad, often glandular; leaf- 

 lets S-9. oblong or oval, generally acute at eacli end, 

 short-stalked, the terminal one sometimes slightly obo- 

 vate and obtuse at the apex, all finely and sharply ser- 

 rate, shining above, glabrous or very nearly so, 6"-i$" 

 long; flowers solitary or few, i'-2i' broad; calyx-lobes 

 lanceolate, acuminate, entire, hispid or glandular, at 

 length spreading, deciduous; petals often obcordate; 

 styles distinct; fruit glandular-hispid, globose, about 

 4" high. 



In low grounds, Connecticut and Massachusetts to New- 

 foundland. June-July. 



