Rydberg: Rocky Mountain flora 561 



sepals lanceolate, acuminate, about 2 cm. long, erect and per- 

 sistent in fruit, tomentulose above, glandular and bristly beneath, 

 often with linear lobes; petals obcordate, about 2.5 cm. long and 

 fully as wide ; hip in fruit more or less pear-shaped, about 3 cm. 

 long and 2 cm. in diameter, sparingly bristly. 



This species has the general habit of A\ Nutkana and A'. Mac- 

 Dougalii, but differs from both in the curved prickles. It has 

 bristly fruit as the latter, but the fruit is more tapering at the base 

 and the bristles fewer. It grows in the mountains at an altitude 

 of 2,300-2,700 m. 



Colorado: Hills about Box Canon, west of Ouray, 1901, 

 Underwood & Selby 122 (type) and iij ; La Plata Canon, 1898, 

 Baker, Earlc & Tracy 860. 



Rosa oreophila sp. nov. 



A shrub 2-3 m. high ; bark reddish, glossy ; prickles mostly 

 infrastipular or lacking, weak, 5 mm. long or less, curved with 

 elliptic bases ; stipules broad, finely pubescent and glandular- 

 denticulate on the margin; free portion ovate, 5—15 mm. long; 

 leaves 7-10 cm. long, 5-7-foliolate ; rachis and petiole finely 

 pubescent and with sessile glands ; leaflets 2—3.5 mm - long, ovate 

 or oval, acute or obtuse, glabrous and dark green above, sparingly 

 and finely pubescent and paler beneath, coarsely serrate ; flowers 

 mostly solitary ; sepals narrowly lanceolate, acuminate, finely pu- 

 bescent on both sides and glandular-denticulate on the margins, 

 erect and persistent in fruit; petals obcordate, 2—2.5 cm - ^ on S J 

 hip glabrous, when ripe fully 2 cm. long, often acute at the base. 



This is perhaps nearest related to the preceding, but differs in 

 the smooth and more rounded fruit and more slender prickles. It 

 grows at an altitude of 2,300—2,500 m. 



Colorado: Four-miles Hill, Routt Co., 1896, Baker (type); 

 Dix P. O., 1898, Baker, Earlc & Tracy 474; Box Canon, Ouray, 

 1 90 1, Underwood & Sclby 121a and b. 



Astragalus oreophilus sp. nov. 



Erect perennial, 3—6 dm. high ; stem sparingly strigose, 

 branched with almost erect branches ; leaves about 1 5 cm. long, 

 with 7—23 leaflets ; stipules triangular to lanceolate, strigose, 

 acuminate, free from the petioles but more or less united with each 

 other across the back of the stem ; petioles 2-4 cm. long ; leaflets 

 oblong or elliptic, about 3 cm. long, strigose on both sides, 



