ROSE FAMILY 443 



the back; petals obcordate, about 2.5 cm. long and fully as wide. Mountains: 

 s Colo. Suhmont. Je. 



14. R, Durandii Crep. Stem terete, armed with very stout prickles, 

 which are about 1.5 cm. long, very flat, curved, puberulent; branches pubescent 

 and densely glandular-hispid; stipules copiously glandular on the back, densely 

 glandular-ciliate ; petiole and rachis unarmed, pubescent and very glandular; 

 leaflets 5-9, broadly oval, rounded at the base, acute at the apex, glabrous above, 

 densely glandular-granuliferous beneath, double-toothed, with gland-tipped 

 teeth; pedicels densely glandular; hypanthium smooth or slightly glandular at 

 the base, globose, in fruit 12-15 mm. broad; sepals glandular on the back. Banks: 

 Ore. — w Ida. Je. 



15. R. melina Greene. Stem stout, about 1 m. high, glabrous, armed with 

 curved prickles, which are 3-8 mm. long, flattened at the base; stipules glandular- 

 denticulate on the margins, usually glandular-granuliferous on the back; petiole 

 and rachis more or less glandular; leaflets mostly 7, oval or obovate, coarsely 

 serrate, 1.5-3 cm. long, glabrous or essentially so on both sides; hypanthium 

 glabrous, globose, in fruit about 12 mm. thick; sepals sparingly glandular-hispid 

 on the back; petals rose-colored, obcordate, 2-2.5 cm. long. R. pandorana 

 Greene. Mountains: Utah — Colo. Submont. — Mont. Je-Jl. 



16. R. aciculata Cockerell. Stem low, much branched, 1-3 dm. high, 

 armed with curved prickles, which are 3-5 mm. long and flattened at the base; 

 branches less than 1 dm. long, usually armed; stipules densely glandular on the 

 margins and the back; rachis and petiole copiously glandular; leaflets 5 or 7 or on 

 the young shoots 9, oval, acute or obtuse, 1-2 cm. long, more or less double- 

 serrate, especially those of the young shoots, with ovate gland-tipped teeth; 

 flowers solitary; pedicels glabrous or often more or less glandular-hispid; hypan- 

 thimn globose, glabrous or glandular-hispid; sepals densely glandular-hispid; 

 petals rose-colored or white, obcordate, about 2.5 cm. long. Hillsides: Colo. — 

 se Utah. Mont. Jl-Au. 



17. R. oreophila Rydb. Stem 2-3 m. high, glabrous, mostly armed with 

 weak curved prickles 5 mm. long, or rarely unarmed; stipules finely puberulent 

 and glandular-denticulate; rachis and petiole finely pubescent and with sessile 

 glands; leaflets 5-7, oval or ovate, 2-3.5 cm. long, glabrous and dark green above, 

 sparingly and finely pubescent and paler beneath, coarsely and simply serrate; 

 flowers mostly solitary; hypanthium glabrous, obovate, usually acute at the base, 

 without distinct neck, when ripe fully 2 cm. long and 15-18 mm. broad; sepals 

 finely pubescent on the back; petals obcordate, 2-2.5 cm. long, rose-colored. 

 R. Bakeri Rydb., not Desegl. Moimtains: Colo. — ^Utah. Submont. Jl. 



18. R. neomexicana Cockerell. Stem 1-2 m. high, terete, armed with 

 usually paired infrastipular prickles, which are 5-10 mm. long, more or less re- 

 curved; stipules glabrous or finely pubescent, somewhat glandular-dentate on 

 the margins; rachis puberulent and sometimes glandular; leaflets 5-7, obovate 

 or on the young shoots elliptic, 1-3.5 cm. long, puberulent or nearly glabrous, 

 glandular-pruinose and rather pale beneath, with ovate teeth; hypanthium ellip- 

 soid, tapering at the base, glabrous, purple, in fruit 8-10 mm. thick, 15 mm. long; 

 sepals glabrous without; petals 1.5-2 cm. long, obcordate. Hillsides and caiions: 

 Ariz. — N.M. — s Colo. — Utah. Son.— Submont. Je. 



19. R. puberulenta Rydb. Stem 1-2 m. high, brown, terete, slender, 

 armed with slender, slightly curved prickles about 5 mm. long; young shoots 

 bristly; stipules finely puberulent; petiole and rachis puberulent, unarmed; leaf- 

 lets 5-7 or on the new shoots sometimes 9, broadly oval, light green, glabrous 

 above, finely puberulent beneath, coarsely serrate, not glandular, 2-4 cm. long; 

 hypanthium glabrous, globose, in fruit 12-13 mm. thick; sepals puberulent on 

 the back; petals about 2 cm. long, rose-colored. Canons and banks: Nev. — 

 Utah — Ida. Son. — Mont. Je-Au. 



20. R. manca Greene. Stem low, 2-10 dm. high, terete, armed with rather 

 few curved prickles 3-5 mm. long and flattened at the base; stipules glandular- 

 denticulate; petiole and rachis more or less glandular; leaflets mostly 7, rarely 

 2 cm. long, oval or obovate, thin, more or less double-toothed, with gland-tipped 



