. Rowlee : North American Willows 257 



flowered at the base, scales linear-oblong, more or less erose at the 

 apex, filaments hairy to the middle, or rarely nearly glabrous : 

 capsule lanceolate, glabrous, short-pedicelled, pedicel however not 

 longer than the gland : style very short and stigmas short and 

 thick : ovary smooth with four sessile stigmas.'' (Nuttall.) 



Typical specimens show a strong resemblance to Salix nigra. 



Salix melanopsis is confined to the western slope of the Rocky 

 Mountains and occurs from British Columbia to Oregon. It is 

 particularly abundant along the Columbia River where Nuttall saw 

 it. Its leaves are very large especially upon young shoots. Speci- 

 mens collected in Cowlitz Co., Washington, by Mr. Coville, have 

 remarkably large leaves and pistillate amfents. Specimens seen 



are as follows : 



Oregon : Cow Valley, Eagle Creek Mountains (W. C. Cusick, 

 Nos. 1800a, 1303), Blue Mountains (L. F. Henderson) (E. Hall). 



Washington : Pehistin (Sandberg and Leiberg, no. 480), Klick- 

 itat Co. (W. N. Suksdorf, nos. 35, 36, 37, 38) ; Snoqueline Falls, 

 King Co. (C. V. Piper and E. C. Smith, no. 614). 



British Columbia : Revelstoke, Long Arrow Lake, Upper 

 Liaird River, wet places, Valley of Fraser River, Columbia River 

 Valley (J. Macoun, nos. 6, 23, 26, 28, 28a). 



• 1 2. Salix Bolanderiana sp. no v. 



Bark of older branches nearly black : aments 4 cm. in length, 

 the pistillate fully 1 cm. thick, borne on long leafy branches : 

 leaves 8 cm. long, 1 cm. wide, closely and very finely serrate, scale 

 spatulate, filaments crisp villous throughout : capsule ovate, closely 

 sessile : stigmas minute, sessile. 



In the Yosemite Valley in California (Bolander, nos. 49, 58, 



4958, 503 0- 



Explanation of Plate d 



1. Salix microphylla. 8. S. sessilifolia . 



2. S. taxifolia. 9. S. Bolanderiana. 



3. S, Pans/iiana. II. S. exigua virens. 



4. S. macrostachya. 12, 13. S. interior. 



5. S. macrostachya Cusickii. 14. S. interior Wheeleri. 



6. S. macrostachya leucodendroides . 15- S. exigua. 



7. S. argophylla. 16. S. melanopsis. 



