342 



SALICACEAE 



pruinose branchlets; leaves lanceolate, acute at base, acuminate at apex, 1 to 

 iy 2 inches long, 2 to 5 lines wide, becoming green above, appressed silky 

 beneath and imparting a silvery sheen, or glabrate and pale; petioles 1 to 3 

 lines long; catkins short-peduncled with 2 or 3 leafy bracts, the staminate 4 

 to 6 lines long and 3 lines thick, the pistillate 3 to 4 lines long and l l / 2 to 2 lines 

 thick; scales dark or yellowish, rounded; filaments glabrous; style none or 

 very short; ovary hoary; stigmas ovate, entire or emarginate; fruiting cat- 

 kins y 2 to % inch long, about as thick; capsules 2 to 3 lines long, light brown, 

 puberulent, pediceled. 



Sierra Nevada, 7,000 to 9,000 feet: Volcano Creek, common in and about 

 the meadows in the Mt. Whitney region, W.L.J. no. 952; Mono Co., Congdon, 

 and northward to Oregon and Idaho. The specific name, macrocarpa, is mis- 

 leading since the capsules are not large. 



Eefs. SALIX MACROCARPA Nuttall, Sylva, vol. 1, p. 83 (1842), type loc. banks of Columbia 

 River, Nuttall; Bebb in Bot. Gaz. vol. 10, p. 221 (1885). Var. ARGENTEA Bebb, 1. c. p. 223 

 (the types from Sierra and Plumas cos.), and in Bot. Death Val. Exped. p. 199 (1893). 

 S. geyeriana Andersson, Oefvers. Vet. Akad. Foerhandl. vol. 15, p. 122 (1858) ; Bebb in 

 Bot. Cal. vol. 2, p. 87 (1880). S. covillei Eastwood in Zoe, vol. 5, p. 80 (1900), type from 

 Bubbs Creek, South Fork Kings River (not seen by us) ; the author of this proposition makes 

 the statement that "it is so unlike that species [S. macrocarpa argentea] that it would be 

 a waste of time to enumerate the differences." 



10. S. sitchensis Sanson. SITKA WILLOW. Arborescent or shrubby, 5 to 

 25 feet high, the trunk 2 to 10 inches in diameter ; leaves obovate to oblanceo- 

 late, rounded or shortly acute at apex, entire (obscurely serrulate on vigorous 

 shoots), dark green and almost glabrous above, densely tomentose and lus- 

 trous silky beneath, 2 to 5 inches long, 1 to 3 inches broad ; petioles 1 to 6 lines 

 long; stipules small, early deciduous or on sterile shoots broad or orbicular, 

 4 to 6 lines long; staminate catkins l 1 /^ to 2 inches long, 5 to 6 lines thick; 

 stamens 1, or exceptionally 2 and their filaments more or less united ; pistillate 

 catkins % to 2 inches long and 3 lines thick, or in fruit 3 to 5 inches long; 

 scales covered with long white silky hairs, the staminate rounded at apex, the 

 pistillate shorter, broader and more acute; style elongated, stigmas short- 

 oblong, entire or nearly so. 



Immediate coast region from Santa Barbara to Marin and Humboldt cos., 

 far north to Alaska (type loc. Sitka) and east to Blue Mts. of Oregon. Also 

 called Silky Willow. 



Forma coulter! Jepson, n. comb. (S. coulteri And.). Leaves coriaceous, 

 densely woolly beneath, 2 to 3 inches long; stipules 3 or 4 lines long. San 

 Francisco, Bolander, no. 2451 and southward. 



Forma ralphiana Jepson n. form. Leaves narrowly oblong, white beneath 

 with a fine dense felt, 2 to 31/2 inches long, 6 to 10 lines wide; stipules small; 

 catkins about 2 inches long. (Folia anguste oblonga, subtus alba, coacta tenui 

 densaque prasdita, 2 ad 3y 2 poll, longa, 6 ad 10 lin. lata ; stipula? parva3 ; amenta 

 circa 2 poll, longa). Marble Fork of the Kaweah, 6,900 feet, W.L.J. no. 690. 

 Named for Ralph Hopping, naturalist on the Kaweah North Fork. 



Forma parvifolia Jepson n. form. Leaves oblanceolate, acute, % to iy 4 

 inches long, 3 to 4 lines wide; stipules minute. (Folia oblanceolata, acuta, 

 3 /4 ad 114 poll, longa, 3 ad 4 lin. lata; stipule minute). Melbourne to Compt- 

 che, Mendocino Co., W.L.J. no. 2229. 



Var. angustifolia Bebb. Leaves narrowly oblanceolate, acute or acuminate, 



