5 14 FLORA, 



with stout commonly recurved prickles or sometimes unarmed; leaflets 5-9 (usually 

 7), oval, oblong, ovate-lanceolate or even obovate, 3-7 cm. long, acute or acutish, 

 pale or pubescent beneath; flowers corymbose or rarely solitary, 5 7 cm. broad; 

 calyx-lobes lanceolate, acuminate or dilated above, hispid-pubescent, spreading, 

 deciduous; fruit globose or depressed-globose, about 8 mm. high, glandular-hispid. 

 In swamps and low grounds, Quebec and Ont. to Minn., Pla. and Miss. June-Aug. 



8. Rosa lucid a Ehrh. Glossy Rose. Like A', humilis but larger, 1-2 m. 

 high; leaflets mostly 7, 2-4 cm. long, thick, shining above; stipules broad, often 

 glandular-toothed; prickles rather stout and flat, straight or slightly curved; fruit 

 about I dm. high. N. J. and Penn. to Ont. and Newf. \R. humilis lucida Best]. 



9. Rosa humilis Marsh. Low or Pasture Rose. (I. F. f. 197 1.) Bushy, 

 I-IO dm. high, usually armed with slender straight infrastipular spines, and more 

 or less prickly. Stipules narrow, entire; leaflets usually 5 (sometimes 7). rather 

 thin, ovate, oval or obovate, somewhat shining, 12-25 mm. long, mostly acute at 

 each end, short-stalked or sessile, glabrous or pubescent beneath; flowers usually 

 few or solitary, 5-7 cm. broad; pedicels and calyx usually glandular; sepals lan- 

 ceolate, acuminate, or dilated above, commonly lobed; fruit globose or depressed- 

 globose, glandular-hispid, about 8 mm. high. In dry or rocky soil, Me. and Ont. 

 to Wis., Ga., Kans. and La. May-July. 



Rosa humilis vill6sa Best. Low, very prickly; leaflets thickish, villous-pubescent 

 beneath. N. J. and N. Y. 



10. Rosa nitida Willd. Northeastern Rose. (I. F. f. 1972.) Bushy, 

 seldom over 6 dm. high, the stems and branches densely covered with slender 

 straight prickles nearly as long as the slender infrastipular spines. Stipules usu- 

 ally broad; leaflets 5-9, oblong or oval, generally acute at each end. the terminal 

 one sometimes slightly obovate and obtuse at the apex, all sharply serrate, shining 

 above, glabrous or very nearly so, 12-30 mm. long; flowers 3-6 cm. broad; sepals 

 lanceolate, acuminate, entire, hispid or glandular; fruit glandular-hispid, globose, 

 about 8 mm. high. In low grounds, Mass. to Newf. June-July. 



11. Rosa canina L. Dog Rose. Canker Rose. Wild Brier. (I. F. f. 

 1973.) Branches erect or straggling, sometimes 3.5 m. long, armed with short 

 hooked spines, not bristly but sometimes glandular. Stipules broad, glandular; 

 leaflets 5-7, ovate or oval, rather thick, generally obtuse at each end. usually 

 simply and sharply serrate, 2-4 cm. long; flower.s solitary or few, pink varying to 

 white; sepals much lobed, lanceolate, reflexed, deciduous; fruit long-ovoid, 1-2 

 cm. long, usually glabrous. In waste places, N. S. to N. J., Va., Tenn. and 

 Kans. Nat. from Europe. June-July. 



12. Rosa rubiginosa L. Sweetbrier. (I. F. f. 1974.) Slender, 1-2 m. 

 high, or forming longer wands, armed with stout recurved spines. Stipules rather 

 broad; leaflets 5-7, similar to those of the preceding, but generally doubly serrate 

 and densely glandular-pubescent and resinous beneath, very aromatic ; flowers 

 pink varying to white; sepals lanceolate, usually much lobed, spreading, decidu- 

 ous, glandular-hispid; fruit oval or ovoid, 1-2 cm. long. In waste places, N. S. to 

 Out., Kans., Tenn. and Va. Nat. from Europe. June-July. 



Rosa cinnamomea L., the Cinnamon Rose, with small double reddish flowers, and 

 leaves downy-pubescent beneath, is occasionally found along roadsides in the Middle 

 and Eastern States. 



Family 12. POMACEAE L. 



Apple Family. 



Trees or shrubs, with alternate leaves, the small deciduous stipules 

 free from the petiole. Flowers regular, perfect. Calyx superior, mostly 

 5-toothed or 5-lobed, its tube adnate to the ovary. Petals mostly 5, 

 usually clawed. Stamens numerous or rarely few, distinct ; anthers 

 small, 2 -celled, the sacs longitudinally dehiscent. Ovary composed of 

 1-5 wholly or partly united carpels; ovules 1-2 (rarely several) in each 

 carpel, anatropous, ascending; styles 1-5; stigma small. Fruit a more 



