WILLOW FAMILY 3-il 



entire, % to 1% inches broad; catkins on short leafy peduncles. — San Fran- 

 cisco, where first collected by Bigelow, and elsewhere in the Bay region. 



Refs. — Salix lasiolepis Bentham, PI. Hartw. p. 335 (1S57), type loe. Salinas ami Carmel 

 livers, Harttcef/; Jepson, Fl. W. Mid. Cal. p. 137 (1901). Var. BIGELOvn Bebb in Bot. C'al. 

 vol. 2, p. 86 (ISSO); S. higelovii Torrey, Pac. R. Rep. vol. 4, p. 139 (18.57). S. franciscana 

 Seeman, Bull. Torr. Bot. Club. vol. 30. p. 634 (1903), the type from "Cliff House, San 

 Francisco." S. bal'eri Seeman, 1. e. p. 635, type from "foothills near Stanford University.'' 



7. S. cordata ]\Iuhl. var. mackenziana Hook. IMackexzie "Willow. Shrub ; 

 leaves oblony-lanceolate, narrowed to the subeordate or truncate base and 

 tapering into the pointed apex, entire or serrulate, glabrous, light green above, 

 ni'ten glaucoits beneath, 1 to 21/4 (or 4) inches long, i/o to % (or II/2) inches 

 broad ; petioles 1 to 3 lines long ; stipules orbicular, early deciduous or none ; 

 catkins subsessile or shortly peduncled, especially the pistillate, sparingly 

 leafy-bracted, dense, 1 to I14 inches long, 3 to 4 lines thick; scales narrow, 

 dark or black, the lower part villous with long white hairs; stamens 2. filaments 

 glabrous, elongated, free or more or less united; st.yle long, stigmas short, 

 liifld: fruiting catkins 1 to l-''^ inches long; ovary and capsule glabrous; 

 pedicel 1 line long. 



High mountains: Sierra Nevada (Mariposa and Calaveras cos.); Lake Co. 

 (ace. Bebb) and far northward. Apparently rare in California. Our form 

 has shorter and less leafy peduncles than the type of the Rocky ]\Its. 



Yar. watsoni Bebb. Branches smooth, polished, yellow; leaves dark green, 

 snuiller. oblong, short-acuminate, serrulate or subentire, 1 to 3 inches long; 

 stipules small or none; catkins 1 inch long, crowded. — High montane. 6.000 

 to 9,000 feet; San Jacinto Mt.. northern Sierra Nevada and eastward to Utah. 



Refs. — Salix cordata Muhlenberg in Ges. Naturf. Fr. Neue Schr, vol. 4, p. 236 (1803), 

 Var. mackenziana Hooker, Fl. Bor. Am., vol. 2, p. 149 (1853). Var. watsoxii Bebb in Bot. 

 Cal. vol. 2, p. 86 (1880); Jones, Willow Fam. Great Plateau, p. 13 (1908). 



8. S. flavescens Nutt. Nuttall AVillow. Shrub 2 to 15 feet high or a 

 small tree 2.3 feet high; branehlets with whitish or very dark bark; leaves 

 broadly obovate or oblong-obovate, entire, rounded at apex or shortly acute, 

 1 to 11/2 (or 4) inches long, i/o to I14 inches broad, yellow-green and lustrous 

 al)ove, yellow-veined, glabrate or densely short-silky beneath ; petioles 4 lines 

 long; catkins appearing befoi*e the leaves, oblong or elliptic, i/^ to 1 inch long, 

 5 to 7 lines thick, sessile; scales obovate, rounded at apex, black or black- 

 tipped, covered with white hairs; stamens 2, conspicuously long-exserted, fila- 

 ments glabrous; ovary white-silky; style none, stigmas broadly linear, some- 

 times notched at apex ; capsule less silky than the ovary. 



Sierra Nevada, 4,000 to 10,000 feet, and seaward Coast Ranges, southward 

 to the San Bernardino Mts., northward to the Siskiyous (W.L.J, no. 2947), 

 and far north to British Columbia and throughout the Rocky Mts. in the 

 United States. Highly variable in both Coast Ranges and Sierra Nevada. 

 The form foimd at Monterey (S. brachystaehys Benth.) is matched by a like 

 form in the Sierra Nevada. Type loc. Rocky Mts. lat. 39°, Thos. Nuttall 

 (Wyeth Exped.). 



Refs.— Salix flavescens Nuttall, Sylva, vol. 1, p. 65 (1842), not of Host; Bebb in Bot. 

 Cal. vol. 2, p. 86 (1880), in part. S.' iiuttalHi Sargent, Card. & For. vol. 8, p. 463 (1895). 

 Var. brachystachi/s Sargent, Silva N. Am. vol. 9, p. 142 (1896) ; Jepson, Fl. W. Mid. Cal. 

 p. 137 (1901). 



9. S. macrocarpa Nutt. var. argentea licl)b. Silver Willow. Slender 

 shrub 6 to Ifi feet high with numerous stems from the base and verv slender 



