1 98 SALICACE.\E 



^^•* ?• -^"Stinae Bebb. A shrub 1-3 m. high; leaf-blades usually short- 

 acummate, 3-6 cm. long, glabrous or slightly pubescent but green above, ilaucoug 

 beneath; aments 2-5 cm. long; bractlets oblong, brown, sparingly white-silky; 

 capsule elongate, subconic, 6-8 mm. long; stipe very short; style nearly 1 mm 

 w ^' ^ mucops glabrescens Anders. Wet places on the mountains: Alta.— 

 V\ yo.— B.C.— Yukon. Submont.—Mont. Je-Jl. 



l;„>,?■K:^"°*^^*® ^ pseudolapponum. This has the glabrous leaves and yellowish or 



oFs nZD'I^nn^uV'^ % ^'''^'''.^- but the low habit, smaller leavii aSd sSortTapsule 

 oi i. pseudolapponum. S. wyomtngensis Rydb. Mountains: Wyo. Jl. 



67. S. MacCalliana Rowley. A shrub 1-2 m. high; leaf-blades 6-7 cm. 

 long, i.o cm wide, acute at both ends, puberulent when young, soon glabrous, 

 green on both sides, finely serrulate; aments 3-4 cm. long; bractlets greenish or 

 brown," capsule^ elongated-conic, white-velvety, 8-10 mm. long; stipe 1 mm. 

 long; style less than 1 mm. long. Low ground : Alta. Mont. 



68. S. saskatchewana v. Seem. A tall shrub or small tree; leaf-blades 

 acute at both ends, 3-6 cm. long, 1 cm. broad or less, finely serrate, soon glabrate, 

 dark green above glaucous beneath; aments 2-5 cm. long; bractlets brown, 

 oval sparmgly villous; capsule grayish silky, with short hairs, about 5 mm. long, 

 nearly sessile; style scarcely 0.25 mm. long. River banks and marshes: Sask! 

 — ^Alta. — Yukon. Boreal. Je. 



69. S. petrophila Rydb. A depressed creeping undershrub, less than 1 

 am. high; leaf-blades 1-3 cm. long, obtuse, glabrous or sparingly silky at first, 

 entire-margined, slightly paler and strongly veined beneath; aments 2-3 cm. 

 long; bractlets blackish, obovate, sparingly silky-villous; capsule white-villous, 

 sessile, 5-7 mm. long ; style fully 0.5 mm. long. S. arctica petraea Anders. Rock 

 Willow. Alpme peaks: B.C.— Calif.— N.M.— Mack. Alp.—Subalp. Jl-Au. 



1 ^^°\^"u*'*i^^r u^^?^^ Cockerell. A depressed creeping undershrub, less than 

 1 dm. high; leaf-blades 1-2 cm. long, 2-5 mm. wide, light green on both sides, 

 strongly veined beneath; aments about 1 cm. long; bractlets black, obovate; 

 capsule grayish viUous, about 4 mm. long, sessile; style about 0.5 mm. long. S. 



Mont JI-aT" ^''''^^' ^•^■—W^^h.-Utah— Wyo.— Mont. Alp.— 



71. S. Nelsonii BaU A shrub 1-3 m. high; leaf-blades acute at both ends, 



10 mm wide, 3-6 cm. long, entire or sparingly crenate, dark green and shining 

 above, glaucous beneath; aments 1.5-3 cm. long; bractlets black or nearly so, 

 ovate, acute, long-silky; capsule silky-pubescent, sessile, 5-7 mm. long; style nearly 

 U.5mm. long. Bogs and river banks: Colo.— Utah.— Alta. Mont.—Subalp. Je. 



72. S. chorophylla Anders. A shrub 1-3 m. high; leaf-blades at first silky, 



soon glabrate, dark green and shining above, glaucous beneath, acute at both 



ends, usually entu-e, 2-5 cm. long; aments 2-6 cm. long; bractlets black, obovate, 



obtuse, silky-pilose ; capsule sessile, 5-6 mm. long, grayish silky; style about 0.5 



mm. long Mountain swamps: Lab.— N.H.—N.M.— Utah— Alaska. Mont.— 

 ibubalp. Je-Au. 



1 7ui* ?■ *'®^*ld", Blankinship. A low spreading shrub, up to 1 m. high; 

 leaf-blades oval, rarely ovate, rounded at both ends or sometimes acutish at the 

 apex, 6-5 cm. long, glabrous and green above, silvery-silky and strongly veined 

 beneath; margms sub-entire; aments at the ends of the leafy branches, 2-3 cm. 

 long; bractlets bro^vTi, short-villous, obovate; capsule short-ovoid, 2-3 mm. 

 long, sessile. Perhaps not distinct from the eastern S. vestita Pursh. Moun- 

 tains: Alta.— Mont.— Ore.— B.C. Mont.—Subalp. Je-Au. 



74. S. orbicularis Anders. Low creeping undershrub; leaf-blades oval or 

 orbicular, 1 5-4 cm. long 1-4 cm. wide, rounded at both ends or sometimes sub- 

 cordate at the base, glabrous, dark green above, pale and somewhat glaucous 

 beneath; aments at the ends of the leafy branches, 2-4 cm. long; capsule short- 

 ovoid, 'i-o mm long, short-villous, sessile. (Perhaps not distinct from S. reticu- 

 lata L., which has narrower yellow bractlets and usually narrower leaves.) Net- 

 veined Willow. Arctic-alpine situations : Alaska— Canadian Rockies— Hudson 

 Bay. Alp. Je-Au. 



