196 SALICACEAE 



47. S. Lemmoni Bebb. A shrub 1-5 m. high; branches at first pubescent, 

 soon glabrate; leaves lanceolate, acute at both ends, entire or subserrulate, silky 

 when young, soon glabrous, sometimes slightly glaucous beneath; aments on 

 short leafy peduncles, 2-3 cm. long; bractlets obovate; capsules grayish tomen- 

 tose, 4-6 mm. long; stipe 2-3 times as long as the glands. Wet places: Calif. 

 Nev. -Ida. Submont. Mont. Je-Jl. 



48. S. alaxensis (Anders.) Coville. A tree sometimes 9 m. high, or a shrub 

 1-2 m. high; leaf -blades obovate to oblong-oblanceolate, acute or rounded at the 

 apex, acute at the base, densely white-tomentose beneath, 5-10 cm. long, 2-4 cm. 

 wide; aments 3-6 cm. long, sessile, naked, appearing with the leaves; capsule white- 

 villous, about 6 mm. long, subsessile; style about 2 mm. long. S. speciosa H. & 

 A. Subarctic and arctic regions: Alaska Mack. Canadian Rockies. Sub- 

 alp. My-Je. 



49. S. Barrattiana Hook. A low shrub; leaf -blades obovate, acute at the 

 apex, often subcordate at the base, 5-7 cm. long, densely white-silky, in age 

 greener above; aments appearing with the leaves, sessile and naked, 3-5 cm. 

 long; capsule white-silky, about 6 mm. long, white-villous; stipe very short; 

 style fully 1 mm. long. S. albertana Rowley. Alpine swamps: Alta. -B.C. 

 Subalp. Je-Jl. 



50. S. bella Piper. A shrub 2-4 m. high; leaf-blades mostly acute, 3-10 

 cm. long, 1-2.5 cm. wide, green and sparsely puberulent above, entire or repand; 

 aments sessile, usually naked, appearing before the leaves, the pistillate ones 

 2-3 cm. long or in fruit 4r-6 cm. long; capsule grayish sericeous, 5-6 mm. long, 

 subsessile; style 1-1.5 mm. long. River banks: Wash. Mont. 'Ida. Sub- 

 mont. Ap. 



51. S. Candida Fluegge. A shrub 6-15 dm. high; leaf-blades oblong or 

 oblong-lanceolate, thick, sparingly repand-denticulate or entire, acute at both 

 ends, dark green above, 5-10 cm. long, 6-16 mm. wide; aments sessile and 

 usually naked, appearing before the leaves, 2-5 cm. long; capsule subconic, 

 densely white-tomentose, 6-7 mm. long; stipe less than 1 mm. long; style about 1 

 mm. long. HOARY WILLOW. Bogs: Lab. N.J. Colo. Ida. Alta. Mont. My. 



S. cordata X Candida. Resembling S. Candida in leaf-form, but less densely hairy 

 and thinner; aments more like those of S. cordata, borne on short branches; capsules 

 glabrous or nearly so. Collected at Ravalli, Mont. 



52. S. sitchensis Sanson. A tree or shrub 2-9 m. high; leaf-blades 3-6 cm. 

 long, entire or remotely glandular-denticulate, acute or abruptly acuminate, at 

 first tomentose, in age dark green, shining and glabrous above, densely white- 

 silky beneath; aments densely flowered, naked or on short leafy branches, the 

 staminate ones 3-5 cm. long, the pistillate ones 4-7 cm. long; capsule grayish, 

 short-silky, about 5 mm. long; stipe and style about 0.5 mm. each. SITKA 

 WILLOW. River banks: Alaska -Calif. Mont. Submont. Mont. Ap-Je. 



53. S. Drummondiana Barratt. A shrub; leaf -blades broadly obovate, 

 5-7 cm. long, 2-3 cm. wide, glabrous above, white-tomentose beneath, entire- 

 margined; aments 2-4 cm. long, subsessile, but usually subtended by a few small 

 leaves; capsule 3-4 mm. long, white-silky, with short hairs, subsessile; style 

 about 0.5 mm. long. Marshes: Canadian Rockies. Subalp. 



54. S. argyrocarpa Anders. An erect shrub 1-6 dm. high; leaf -blades 

 oblong or oblanceplate, acute at both ends, entire or crenulate, bright green and 

 glabrous above, silvery-silky beneath, 3-5 cm. long, 6-12 mm. wide; aments on 

 short leafy branches, dense, 1-2.5 cm. long; bractlets villous; capsule 2-3 mm. 

 long, white-villous; stipe 1-2 mm. long. SILVER WILLOW. Mountains and 

 hills: Lab. N.H. w Ont (? Sask.) Mack. Boreal. Je-Jl. 



55. S. arbusculoides Anders. An erect shrub less than 1 m. high; leaf- 

 blades elliptic-lanceolate, acute at both ends, glabrous and green above, silky 

 beneath, minutely serrulate or entire, 2-5 cm. long; aments appearing with the 

 leaves, 2-3 cm. long, usually sessile, naked or subtended by a few leaves; cap- 

 sule 3-4 mm. long, subsessile. Swamps: Hudson Bay -Canadian Rockies 

 Alaska. Subalp. 



