Vol.. II.] 



ROSE FAMILY 



6. Rosa Carolina L. Swamp Rose. 

 (Fig. 1970.) 



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; leaflets 

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

 oblong, ovate-lanceolate or even obovate, 1'-$' long, 

 finely and simply serrate, generally short-stalked, 

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

 neath; flowers corymbose or rarely solitary, z'-tf 

 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, Quebec and Ontario to 

 Minnesota, south to Florida and Mississippi. June-Aug. 



7. Rosa humilis Marsh. Low or Pas- 

 ture Rose. (Fig. 1971.) 



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

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



Bushy, 6'-6 high, usually armed with slender 

 straight infrastipular spines, and more or less 

 prickly. Stipules narrow, entire; leaflets usu- 

 ally 5 (sometimes 7), rather thin, ovate oval or 

 obovate, somewhat shining, coarsely and simply 

 serrate, 6 // -2 / long, mostly acute or acutish at 

 each end, short-stalked or sessile, glabrous or pu- 

 bescent beneath; flowers usually few or solitary, 

 2 / ~3 / broad; pedicels and calyx usually glandular; 

 sepals lanceolate, acuminate, or dilated above, 

 commonly lobed, spreading and deciduous; 

 petals obovate, obcordate or sometimes lobed; 

 styles distinct; fruit globose or depressed-glo- 

 bose, glandular-hispid, about A," high. 



In dry or rocky soil, Maine and Ontario to Wis- 

 consin, south to Georgia and Louisiana. Our com- 

 monest wild rose. A double-flowered form occurs in Pennsylvania and New Jersey. May-July. 



Rosa humilis lucida (Ehrh.) Best, Bull. Torr. Club, 14: 256. 1887. 

 Rosa lucida Ehrh. Beitr. 4: 22. 1789. 



Leaflets 5-9, thicker, shining above, stipules broader; flowers more numerous. New Jersey 

 and Pennsylvania to Ontario and Newfoundland. 



Rosa humilis villdsa Best, Bull. Torr. Club, 14: 256. 1887. 

 Low, very prickly; leaflets thickish, villous-pubescent 

 beneath. New Jersey and southern New York. 



8. Rosa nitida Willd. Northeastern Rose. 

 (Fig. 1972.) 



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 usually broad, often glandular; leaf- 

 lets 5-9, oblong or oval, generally acute at each end, 

 short-stalked, the terminal one sometimes slightly ob- 

 ovate and obtuse at the apex, all sharply serrate, shin- 

 ing above, glabrous or very nearly so, 6 // -i5 // long; 

 flowers solitary or few, i f -2%' broad; sepals lanceo- 

 late, acuminate, entire, hispid or glandular, at length 

 spreading, deciduous; petals often obcordate; styles dis- 

 tinct; fruit glandular-hispid, globose, about 4" high. 



In low grounds, Massachusetts to Newfoundland. 

 June-July. 



