72 COMMON CANADIAN WILD PLANTS. 



5. R. nit'ida, Willd. Low. Stem and branches usually 

 thickly covered with prickles interspersed with straight 

 slender spines. Stipules mostly dilated. Leaflets bright 

 green and shining, mostly narrowly oblong. Flowers gen- 

 erally solitary. Sepals entire. — Margins of swamps, Atl. 

 Prov. 



6. R. rubigino'sa, L. (Sweet - Beibb.) Stem tall. 

 Prickles numerous, the larger hooked, the smaller awl- 

 ishaped. Leaflets 5-7, doubly serrate, glandular beneath, 

 aromatic. Flowers mostly solitary. Fruit pear-shaped or 

 obovate. — Roadsides and fields. 



* * * Styles separate ; sepals erect and connivent after flowering, 

 persistent. 



■*- Fruit globose. 



7. R. blanda, Ait. (Eablt "Wild Eosb.) Stem 1-3 feet 

 high. Prickles (if a,ny)/ew and scattered, straight. Leaflets 

 5-7, mostly oblong-lanceolate, cuneate at the base, not 

 resinous, simply serrate. Sepals hispid, not lobed. Ped- 

 uncles 1-3-flowered. — Rocks and rooky shores, mostly east- 

 ward. 



8. R. Say'i, Schwein. Stems 1-2 feet high, very prickly. 

 Leaflets 3-7, broadly elliptical to oblong-lanceolate, resinous, 

 the teeth serrulate. Flowers large, mostly solitary. Outer 

 sepals usually lobed, not hispid. — Our most northern rose. 



9. R. Arkansa'na, Porter. Stems low, very prickly. 

 Stipules narrow. Leaflets 7-11, broadly el.iptical to oblong- 

 lanceolate, wedge-shaped at the base, simply serrate, not 

 resinous. Outer sepals lobed, rarely hispid. — N.W. prairies. 



.*- Fruit oblong-ovate to oblong. 



10. R. Engelman'ni, "Watson. Stems 3-4 feet high, often 

 very prickly. Leaflets 5-7, the teeth serrulate. Flowers 

 solitary. Sepals not lobed. Fruit J-1 inch long. — Shores 

 of Lake Superior and westward. 



15. CRATJE'GUS, L. HaWTHOEN. 



1. C. eoeein'ea, L. (Scarlet - fruited Thorn.) A low 

 tree with reddish branches, and stout chestnut-brown 



