WILLOW FAMILY 67 



tree with rough, dark bark, normally belonging to river banks 

 at low altitudes and probably not reaching the Park boundary. 



3. S. longifdlia Muhl. Long-leaf Willow. Leaves linear- 

 lanceolate, very acute, remotely toothed, 1 to 5 in. long, y& 

 to J 4 in. wide. Stipules very early deciduous. Catkins ^2 to 

 V/2 in. long, on short leafy peduncles. Capsules glabrous. 



The many erect branches of this willow form rounded 

 clumps 5 to 15 ft. high. The leaves are mostly glabrous, but 

 there is a var. argyrophylla And., known as Coyote Willow, 

 with a permanently silvery-pubescent foliage. Both forms 

 grow in rocky stream beds along our lower borders. Still 

 another form, with leaves up to 2> l / 2 in. long and l / 2 in. wide, 

 and catkins 1 or 2 in. long, has been described from the 

 Yosemite under the name of 5". bolanderiana Rowlee. 



4. S. sitchensis Sans. Sitka Willow. Leaves narrowly 

 oblong, acute at both ends, very prominently veined, white 

 and velvety beneath, soon green above, 1 to 3 in. long, % to 

 Yt. in. wide; stipules minute and lanceolate, or wanting. Cat- 

 kins narrow, becoming 1^ to iy 2 in. long, on short leafy 

 peduncles. Capsules pubescent. 



The Sitka Willow, also known as Velvet Willow and as 

 Silky Willow, belongs typically to the north coast but occurs 

 in a narrow-leaved form at a few places in the Sierra Nevada: 

 Yosemite Valley (near Stoneman Bridge and Happy Isles); 

 Nevada Falls; Merced Lake; Stubblefield Canon; Kaweah 

 River; Gilmore Lake, near Tahoe; etc. There are several 

 varieties named by Jepson. The silkiness of the foliage is 

 approached only in S. macrocarpa, but that has much shorter 

 catkins and white-powdery twigs. 



5. S. scouleriana Barr. Nuttall Willow. Leaves obo- 

 vate, rounded above or very shortly acute, entire, 1 to 2 in. 

 long, y 2 to 1*4 i n « wide, glabrous above, becoming so be- 

 neath; stipules semicordate, toothed. Catkins nearly sessile, 

 y 2 to 1 in. long, scaly-bracted but not leafy at base. Capsules 

 white-silky. (S. ilavescens Nutt. S. nuttallii brachystachys Sarg.) 

 — A shrub or small tree, best known by its broad leaves; 

 occasional in meadows and along streams at moderate alti- 

 tudes. 



6. S. lasiolepis Benth. Arroyo Willow. Leaves oblong or 

 broadly lanceolate, acute, obscurely toothed, \ l / 2 to 5 in. long, 

 Y% to 1% in. wide, green and glabrous above, white-pubescent 

 or pale beneath; stipules mostly wanting. Catkins nearly 

 sessile, 24 to l l / 2 in. long. Capsules glabrous or a little 

 pubescent. 



