SALICINE.E. (WILLOW FAMILY.) 337 



downy but very soon glabrate and dull green above, glaucous and rufous 

 pubescent beneath or often when young clothed with a lustrous silky tomen- 

 turn; margin entire or irregularly subserrate; stipules small, denticulate, 

 fugaceous : aments oblong, densely flowered, appearing before the leaves, the 

 males closely sessile, an inch long, the females on distinct peduncles, rarely 

 with leafy bracts, in fruit 2 inches long or more : scales blackish, obovate, very 

 silky : capsules white-tomentose, 3 to 4 lines long, tapering into a long beak, 

 the slender pedicels about equalling the scales: styles obsolete; stigmas long, 

 entire or deeply parted, the linear lobes indexed. — A shrub, 4 to 5 feet high, 

 alt. 6,500 feet. The geographical equivalent of the Eastern S. discolor, and 

 represented on the western coast by the form known as S. Scouleriana. 



9. S. rostrata, Richardson. Leaves varying from obovate to lanceolate, 

 1 to 3 inches long, acute or acuminate, thin at first, becoming rigid, serrate or 

 nearly entire, downy or smooth above, glaucous, reticulate-veined and tomen- 

 tose beneath ; stipules usually small and deciduous : aments bracteate, appear- 

 ing with the leaves ; male sessile, rather short, densely flowered ; female becoming 

 very loose in fruit: capsules tomentose, tapering from near the base into a very 

 long slender beak; pedicels thread-like, conspicuously exceeding the pale, rosy- 

 tipped, linear, thinly-villous scales: style scarcely any; lobes of the stigma 

 entire or deeply parted. — Does not spread from the root, forming a clump, 

 but has rather the habit of a small bushy tree. A reduced form, divaricately 

 much branched and the slender twigs thickly set with small, oblanceolate, 

 mostly entire leaves, is common in the mountains. New England to Van- 

 couver Island and northward to the Saskatchewan. 



S. mackocahpa, Nutt. (S. Geyeriana, And.), collected by Geyer on the 

 Coeur d'Alene River in Northern Idaho, is likely to occur within our limits, 

 t- +- Pedicels short or none. 

 ** Styles distinct. 



10. S. chlorophylla, Anders. Leaves lanceolate or oblong-obovate, quite 

 entire, bright green above, glaucous beneath ; stipules none : aments short, closely 

 sessile, naked at base, cylindrical, remarkably compact : scales very dark : cap- 

 sules sessile, ovate-oblong, obtuse, densely ashy-tomentose, style elongated, 

 entire; stigmas entire. — A straggling bush, l£ to 6 feet high, at 11,000 feet 

 alt. One-year-old twigs shining chestnut, sometimes covered with a glaucous 

 bloom : buds large, dark-colored : young leaves often silky. Cascade, Wasatch 

 and Rocky Mountains ; northward to the Saskatchewan. 



11. S. Candida, Willd. Leaves narrowly lanceolate, subcoriaceous, 2 to 4 

 inches long, £ to f inch wide, acute or the lowest obtuse, tapering at base 

 into a short petiole, upper surface downy, becoming nearly glabrous when old, 

 under surface covered with a dense snow-white tomentum ; margin obscurely crenu- 

 late, revolute: aments subsessile, erect, cylindrical, when in flower about ar 

 inch long, anthers red, when in fruit lengthening to 1 J or 2 inches : scales 

 obovate, clothed with long white hairs: capsule ovate-conic, densely white- 

 woolly ; pedicel about twice the length of the elongated, dark-colored nectary : 

 style elongated, dark red; stigmas short, spreading, notched. — Bogs, foot- 

 hills of the Rocky Mountains; rare. Near Cutbank Creek, Montana, Canby; 

 Colorado, Hall. Shrub 2 to 5 feet high: young shoots white-woolly, older 



shining red, 



22 



