Vor. II.] ROSE FAMILY. 
6. Rosa Carolina L. Swamp Rose. 
(Fig. 1970.) 
Rosa Carolina I,. Sp. Pl. 492. - 1753. 
Bushy, 1°-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/—3/ long, 
finely and simply serrate, generally short-stalked, 
acute or acutish at each end, pale or pubescent be- 
neath; flowers corymbose or rarely solitary, 2/—3/ 
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. 
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7. Rosa humilis Marsh. Low or Pas- 
ture Rose. (Fig. 1971.) 
Rosa humilis Marsh. Arb. Am. 136. 1785. 
Rosa parviflora Eth. 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 4/’ 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 Ebth. 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 villosa 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’’-15’’ long; 
flowers solitary or few, 1/-2!4’ 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. 
