Rydbekg : Rockv Mountain flora 403 



fers in the yellow color of the plant, the unspotted flowers and 

 the entire lip. It grows at an altitude of 1400-2500 m. 



Nebraska : War Bonnet Canon, 1 890, T. A. Williams, ^(type). 



Colorado: Echo Canon, near La Veta, 1900, F. K. Vreeland, 

 649. 



Salix pachnophora sp. nov. 



A shrub 2—3 m. high or perhaps sometimes higher : stems 

 yellowish ; branches dark bluish with a bloom ; leaves oblong- 

 lanceolate or oblanceolate, 3-5 cm. long, or on vigorous shoots I 

 dm. long, acute at both ends, densely white-silky beneath, glab- 

 rous or when young slightly silky above, rather thin, with promi- 

 nent veins beneath ; pistillate aments subsessile, 1-3 cm. long ; 

 bracts almost black, ovate or oblong, acutish or obtuse ; pistils 

 subsessile ; ovary grayish-silky, ovoid, 3—5 mm. long ; styles 

 slender, about 1.5 mm. long; stigmas slender, deeply 2-cleft ; 

 staminate aments about 1.5 mm. long, subsessile ; bracts similar; 

 stamens 2, filaments glabrous, distinct. 



This species is evidently most nearly related to S. bclla and S. 

 subcoerula, differing from the former in the smaller aments and cap- 

 sules and the presence of bloom on the branches and from the 

 latter by the sessile and naked aments. It grows in the moun- 

 tains at an altitude of 2,300 to 2,500 m. 



Colorado : Chambers lake, 1 899, Agricultural College of Colo- 

 rado coll. (type); Rico, Dolores Co., 1899, Geo. E. Osterhout, 

 2jOj ; along Uncompahgre River near Ouray, 1901, Underwood 

 & Selby, 236. 



New Mexico: Beulah, 1901 & 1902, T. D. A. Cockerel!. 



Atriplex oblanceolata sp. nov. 



Suffruticose dioecious perennial with decumbent base and as- 

 cending branches, about 2 dm. high ; leaves oblanceolate or spat- 

 ulate, 2—3 cm. long, obtuse or acutish, densely white-scurry on 

 both sides, entire, short petioled, or sometimes nearly sessile ; pis- 

 tillate flowers in small axillary clusters ; fruiting bracts ovate in 

 outline, slightly dentate, tubercled or irregularly crested on the 

 back ; staminate flowers brown in small terminal panicles. 



This species is most nearly related to A. Nuttallii and A. eremi- 

 cola. From the former it differs in the decumbent low habit, the more 

 distinctly petioled leaves and the brown panicled staminate flowers 

 (in A. Nuttallii they are yellow and arranged in interrupted spikes). 

 It is more like A. eremicola, from which it scarcely differs except 



