488 



SALICACEAE 



s. 

 s. 



lasiandra. 

 caudata. 



Scales yellow, deciduous; leaves elongated, usually 4-5 or more times longer than wide; styles very short. 

 'Leaves linear-lanceolate to lanceolate, closely serrulate; stamens 3-8 or 10. 

 Petioles glandular above. 



Leaves glaucous beneath. ]• 



Leaves green beneath. ^■ 



Petioles not glandular. ... 



Leaves green beneath. 3. S. gooddmgn. 



Leaves glaucous beneath. 



Young twigs yellowish, drooping; petioles slender. 4 



Young twigs brown, spreading; petioles stout. 5 



Leaves linear, or linear-lanceolate (except No. 7), entire or remotely denticulate; stamens 2. 

 Stigma lobes long, linear or oblong. 

 Leaves and capsules densely pilose. 



Blades linear-lanceolate. o- 



Blades lanceolate to broadly elliptical. '■ 



Leaves and capsules thinly pilose to glabrate. 



Blades linear-lanceolate or oblanceolate. S. 



Blades linear. "• 



Stigma lobes short. 



Leaves and capsules white pilose. 



Leaves pubescent to glabrate; capsules glabrous. 



Blades linear, mostly entire, pubescent. 11- 



Blades lanceolate, denticulate, glabrate. 12. 



5". amygdaloides. 

 S. laevigata. 



S. hindsiana. 



S. scssilifolia. 



S. fluviatilis. 



S. parishiana. 



10. 6'. argophylla. 



S. exigua. 



S. niclaiiopsis. 



13. 



14. 

 IS. 



16. 

 19. 



17. 

 18. 



21. 

 26. 



22. 



19. 



27. 



22. 

 23! 



22). 



S. pcdicellaris. 



S. lutca. 



S. jiiackensiana. 



S. farrae. 

 S. lasiolepis. 



S. monochroma. 



S. psendomyrsinites. 



S. pseudomonticola. 

 S. piperi. 

 S. barclayi. 



S. lasiolepis. 

 S. hookeriana. 



S. barclayi. 

 S. commntata. 



Scales brownish to nearly black (yellow in No. 42); more or less persistent; leaf-length rarely more than 3-4 

 times the width; stvles 0.5-2 mm. long. . . .,, 



Capsule glabrous (pubescent in Nos. 19a, 23b, and 27a, and sometimes m 22). . • 

 Leaf blades glabrous (usually hairy beneath in No. 19, and thinly so above in No. 

 Styles very short (0.2-0.3 mm. long). 



Blades 2-4 cm. long, entire, finely reticulate. 

 Styles 0.4-0.7 mm. long. 

 Blades glaucous beneath. 



Blades lanceolate to ovate-lanceolate, mostly serrulate. 

 Pedicels 1-2 mm. long (2.5 in var. platyphylla). 

 Pedicels 2.5-4 mm. long. 

 Blades oblanceolate, mostly entire. 



Blades 3-5 cm. long; scales glabrate. 

 Blades 6-10 cm. long; scales densely woolly. 

 Blades green beneath, serrulate. 



Blades ovate-lanceolate to obovate, thin. 

 Blades lanceolate, thick, firm. 

 Styles 1-1.5 mm. long; blades broad, glaucous beneath. 

 Aments subsessile. 



Blades elliptic-ovate to ovate. 

 Blades elliptic to oblanceolate. 

 Aments on leafy peduncles 1-3 cm. long. 

 Leaf blades hairy on at least one side. 

 Aments sessile or subsessile. 



Blades oblanceolate to narrowly obovate; styles 0.5 mm. long. 

 Blades broadly oval; styles 1 mm. long. 

 Aments on leafy peduncles; styles 1-1.5 mm. long. 

 Blades thinly tomentose above. 

 Blades tomentose on both sides. 

 Capsules hairy (see also 19a,- 22, 23b, and 27a). 

 Styles distinct, 0.5-1 or 1.5 mm. long. 



Leaves more or less glabrate at maturity. 

 Prostrate creeping shrubs, blades dull. 

 Blades glabrous, green beneath. 

 Blades hairy on margins, glaucescent beneath. 

 Erect or ascending shrubs; blades bright green. 

 Blades broadly elliptic-ovate, 1-3.5 cm. long. 

 Blades oblanceolate to obovate, 3-6 cm. long. 

 Blades lanceolate to narrowly elliptical, 4-9 cm. long. 

 Leaves densely hairy (at least beneath) at maturity. 



Branchlets always pruinose; blades silvery pubescent beneath. 

 Pubescence short; scales thinly pilose. 

 Tomentum. long; scales densely lanate. 

 Branchlets never pruinose. 



Styles 0.7-1.5 mm. long; stamens 2. 

 Leaves silky villous on both sides. 

 Leaves tomentose on both sides. 

 Aments leafy-pedunculate. 

 Aments subsessile. 

 Leaves densely hairy beneath. 



Floral gland short (less than Yz mm.). 

 Blades oval or elliptic. 

 Blades narrowly oblanceolate. 

 Floral gland long. 



Blades linear lanceolate. 

 Blades oblong-obovate. 

 Styles 0.5-0.7 mm. long; stamen 1. 



Blades cuneate-obovate, short-pubescent. 

 Blades elliptic to oblong-ovate, densely opaque-tomentose. 

 Styles obsolete or verv short (0-0.3 mm. long). i c o ' 



Erect shrubs 1 m. high or more, subalpine or lower; leaves lanceolate to obovate; capsules b-S mm. 



20. S. v-'olfii idahoensis. 



long. 

 Aments dense; scales black; stigmas long. 



Blades oblanceolate to obovate.- 

 Aments lax; scales yellowish; stigmas short. 

 Blades broad; pedicels 3-5 mm. long. 

 Blades narrow; pedicels 2 mm. long. 

 Low or prostrate alpine shrubs, 0.5-5 dm. high; leaves oblong-oval to 

 long. 

 Blades, glabrous. 



Blades 0.5-1 cm. long. 

 Blades 1.5-3 cm. long. 

 Blades long-villous, especially beneath. 

 Blades 3-5 cm. long. 



41. S. scoiileriana. 



42. 

 43. 



S. bebbiaiia. 

 S. geyeriaua. 



orbicular; capsules 3-5 mm. 



44. 

 45. 



S. nivalis. 



S. sa.xiniontana. 



46. S. vestita. 



