190 SALIC ACEAE 



L 



Twigs puberulent; leaf-blades usually glandular-denticulate. 



Bractlets oblong, yellow; leaf-blades usually broadly oblanceolate. 



T X.1 1 ^ 1 , . 63. »S. Scemannii. 



Leaves oblanceolate or oblong-lanceolate; bractlets oblong 



Leaves silvery-silky beneath, not strongly reticulate; bractlets black. 



Leaves white-tomentose beneath, strongly reticulate; bractlets brown. 



A X 1 j.i_ , , , 51. S. Candida. 



Anients less than 1 cm. broad; ovary less than 5 mm. long. ^ 



Leaves broadly obovate. 



Twigs puberulent; bractlets light brown; stamen 1. 62. S. sitchensis 



T Twigs glabrous: bractlets blackish; stamens 2. 53. S. Drummondiana. 



Leaves oblong, lanceolate, or oblanceolate. 



Bractlets yellow or brown: stipes 3-4 times as long as the nectaries ; style less than 



5 mm. long, 54. S. argyrocarpa. 



Bractlets fuscous; stipes less than twice as long as the nectaries 



Style about 0.5 mm. long; bractlets obtuse. 55. *S. arhusculoides. 



Style 1-2 mm. long. 



Branches without a bloom; leaves tomentose beneath. 



Branches with a bloom; leaves white-silky beneath. 



Aments peduncled and leafy-bracted. 57. S. subcoerulea. 



Aments sessile and naked. 58. S. pachnophora, 



X. Arcticae. 

 Aments on leafy peduncles. 



Leaves grayish villous on both sides, less so on the upper 

 Twigs white- villous or silky; branches yellow or grayish 



Leaves villous; capsules densely pubescent. 59. S. brachycarpa. 



Leaves silky; capsules finely and sparingly pubescent. 



Twigs puberulent; branches usually purpUsh. ^^' ^' *^^'*^^"^^*^- 



Bractlets black or with blackish tips. 



Leaves oblong, 2-3 cm. long; bractlets obovate; brandies divergent. 



T««,«« ^1.1 1 J. , 61^- S. pseudolapponum. 



Leaves oblanceolate or obovate. 3-6 cm. long; bractlets oblong; branches 



■R..o^+i ^^^^{Ji^S- , , 62. S. glaucops. . 



Bractlets yellow, oblong. 63 5 Seemannii 



lut^u^ }^ ^^ ^^^" TP^^ covered with white hairs parallel to the midrib. 

 Shrubs not creeping, although often depressed. 



Leaves broadly oval, often minutely glandular-dentate. 

 Leaves narrower. ^^- ^- '^^^ordala. 



Leaves oblong or oblanceolate, or ovate. 



Leaves 2-4 cm. long; capsule 3-5 mm. long. 



Bractlets yellow or brown, oblong; leaves elliptic or oblanceolate. 



tnin, darkenmgm drj-ing; twigs purple. 65. S. desertorum. 

 iiractlets fuscous at the apex; leaves oblong, not blackening in 



Leaves 4''Tcm. long. ^^- ^' Pseudolapponum. 



Bractlets fuscous; leaves elUptic or oblong, obtuse or acute, usually 

 reticulate; glabrous only in age. 62. S. glaucops. 



liractlets yeUow or brown ; leaves usually short-acuminate, glabrous 



except when very young, not reticulate. 

 Leaves entire or sparingly glandular-denticulate, oblanceolate. 



T a 1 , . ^6. S. Austinae. 



Leaves finely serrulate, elhptic, lanceolate, or oblanceolate. 



T«o,-.^ u«^«« i^ 1 ^ ^^- •S». MacCalliana. 



Leaves linear-lanceolate. 68 S saskatchpirana 



Shrubs creeping; arctic or alpine. sasKatcneuana. 



Leaves obovate or oblanceolate: aments many-flowered. 



Aments na^fdT'^om iSltudT" "'^*' ' ""^''"'^ few-flowered. To/ f clTa'densfs. 

 Leaves oblanceolate. strongly veined. 71 q TSTpUnnii 



Leaves elliptic, not strongly veined. fi" %[ ^/^/J^/j^. 



XL Reticulatae. 



Leaves covered beneath with long wliite silky hairs. 73 5 Fernaldii 



Leaves at least in age not silky. ' -^^'^"t^*""- 



Leaf-blade over 1 cm. long; aments comparatively many-flowered 



^^^^"^^.^^7 ^^^^ ^Jt ^^® ^^^^^ ^'^-^y- l^'^^'^s strongly reticulate; bracts broadly 

 obovate, fuscous, the upper portion almost glabrous. to. uiuauiy 



^^^n^w ^{^"'^.^^^^^k'''^' ^^^^^^ ^""^^ strongly reticulate :^br^s'''Sin"eatJ-oblong. 

 yello-ft , almost glabrous. 75 o saTimoninnn 



Leaf-blade 1 cm. or less long; aments few-flowered; bractlets yellow, almost glabrous, 



76. S. nivalis. 



