WILLOW FAMILY 195 



before the leaves, 2-4 cm. long; bractlets dark, obtuse, white- villous ; capsule 

 subsessile; style about 0.5 mm. long. Canons and river banks: w Tex. Colo 

 Ariz. Submont. Mont. Ap-My. 



39. S. Dodgeana Rydb. A delicate suffruticose plant, scarcely more than 

 6 cm. high; leaf-blades 4-5 mm. long, oblong or oval, glabrous, obtuse or acute 

 strongly veined, light green; staminate aments 3-4-flowered; pistillate aments 

 usually 2-flowered; bracts oblong, truncate, sparingly villous; capsule subsessile 

 3 mm. long; style obsolete. The smallest willow in the world. Summits- Mont' 

 Wyo. Alp. Jl-Au. 



40. S. petiolaris J. E. Smith. A shrub 1-3 m. high; leaf-blades acuminate 

 at both ends, slightly silky when young, in age dark green and shining above 

 glaucous beneath; aments appearing before the leaves, naked or nearly so, about 

 2 cm. long; bractlets yellow with dark tips, white-pilose; capsule 4-6 mm. long 

 subconic; stipe 2-3 mm. long; style obsolete. Swamps: N.B. Tenn Ills ' 

 S.D. Sask. Boreal. My. 



41. S. Geyeriana Anders. A shrub 2-3 m. high; leaf-blades linear-oblance- 

 olate, 2-6 dm. long, densely silky-strigose when young, less so or sometimes 

 glabrate in age, somewhat paler beneath; aments on very short leafy branches, 

 1-2 cm. long; bractlets oblong, yellowish, sparingly short-villous; capsule sub- 

 conic, short-pubescent, 5-6 mm. long; stipe 1-2 mm. long; style obsolete. S. 

 macrocarpa Nutt. Creek banks and mountain valleys: B.C. Mont. Colo. 

 Ore. Submont. Mont. Ap-Je. 



42. S. gracilis Anders. A shrub 1-2 m. high; leaf-blades 3-5 cm. long, 

 about 4 mm. wide, linear or lance-linear, at first tomentulose, soon glabrous and 

 green above, slightly glaucous beneath, entire or denticulate; aments on short 

 leafy branches, lax, 2-3 cm. long; bractlets oblong, yellowish with dark apex; 

 capsule elongate-conic, 5-6 cm. long, grayish silky; stipe 3-4 mm. long; style 

 obsolete. S. rosmarinifolia Hook. River banks: Sask. (? Wis.) Boreal. 



43. S. discolor Muhl. A shrub or low tree up to 7 m. high; leaf-blades 

 oblong-oblanceolate, acute at both ends, irregularly serrate or entire, bright 

 green above, glaucous beneath, glabrate, 4-10 cm. long, 1.5-3 cm. wide; aments 

 appearing before the leaves, dense, 3-5 cm. long, or the pistillate ones 4-7 cm. 

 in fruit; capsule elongated-conic, about 1 cm. long, long-silky; stipe about 2 mm. 

 long; stigma obsolete. PUSSY WILLOW. Swamps and wet places: N.S. Del. 

 Mo. S.D. Sask. Boreal Mr-Ap. 



44. S. perrostrata Rydb. A shrub 1-4 m. high; leaf-blades obovate- 

 lanceolate or oblanceolate, when young finely silky, in age glabiate, 2-4 cm. long, 

 1-1.5 cm. wide, undulate or entire, light green above, pale beneath; aments 

 usually on very short leafy branches, 1-3 cm. long; bractlets sparingly silky; 

 capsule elongated-conic, 7-8 mm. long, finely pubescent; stipe 2-3 mm. long; 

 style obsolete. BEAKED WILLOW. River valleys: Hudson Bay Neb. Colo. 

 Utah Alaska. Submont. Mont. My-Je. 



45. S. Bebbiana Sarg. A shrub 2-6 m. high, sometimes a tree 8 m. high; 

 leaf-blades elliptic, oblong, or oblong-lanceolate, acute, blunt, or short-acuminate, 

 rounded at the base, sparingly serrate or entire; aments sessile, sometimes sub- 

 tended by a few small leaves, 2-5 cm. long; bractlets sparingly long-villous ; 

 capsule elongated-conic, finely pubescent, about 8 mm. long; stipe 2-3 mm. long; 

 style obsolete. S. rosfrata Richards. Valleys, river banks, and hillsides: Anti- 

 costi N.J. N.M. Ariz. Calif. B.C. Plain Mont. Ap-My. 



46. S. Scouleriana Barratt. A shrub or tree, occasionally 9 m. high; young 

 twigs from densely velutinous to almost glabrous; leaf -blades obovate, rounded 

 or abruptly acute at the apex, cuneate at the base, at maturity thin, dark yellow- 

 ish green and lustrous above, pale, glaucous and more or less pubescent beneath, 

 4-10 cm. long; aments sessile, naked, 2^4 cm. long, about 1 cm. thick; capsule 

 subconic, about 1 cm. long, densely white- villous; stipe short; style very short. 

 S. flavescens Nutt. S. Nuttallii Sarg. Along streams: Sask. : N.M. Calif. 

 Yukon. Submont. Mont. Mr-Je. 



