1919] SCHNEIDER— AMERICAN WILLOWS 317 



Bebb in Watson, Bot. Calif. 2:85. 1879,^ pro parte et exclud. 

 synon.; Sargent, Rep. For. N. Am. loth Census U.S. 9:168. 1884, 

 pro parte et excl. var.; Silva N. Am. 9: 127. 1896, pro parte; Sud- 

 worth in Bull. U.S. Dept. Agric. Div. For. 14:122 (Nomencl. Arb. 

 Fl.). 1897, pro parte; For. Trees Pac. Slope 223. 1908, pro parte; 

 Eastwood, Handb. Trees Calif. 37. 1905, pro parte; Britton and 

 Shafer, N. Am. Trees 196. 1908, pro parte minima; Howell, Fl. 

 Northw. Am. 1:618. 1902; Piper in Contr. U.S. Nat. Herb. 11: 

 213 (Fl. State Wash.). 1906; Ball in Box. Gaz. 60:49. ^g. 2. 1915; 

 in Piper and Beattie, Fl. Northw. Coast 115. 191 5; Henry, Fl. S. 

 Br. Col. 96. 1915; Rydberg, Fl. Rocky Mts. 192. 1917, pro parte. 

 —S. sessilifolia var. villosa And. in K. Sv. I.e. 56 et Prodr. I.e. 214. — 

 S. macrostachya Nutt., N. Am. Sylva 1:72. 1843; Howell, Fl. I.e. 

 619, pro parte; Rowlee in Bull. Torr. Bot. Club 27:250. 1900, pro 

 parte et excl. var.; Rydberg, Fl. I.e. 192. — S. macrostachya var. 

 Cusickii Rowlee, in Bull. I.e. pi. 9, fig. 5, sine descr. — S. longijolia 

 var. sessilifolia Jones, Willow Fam. 24. 1908. 



Type locality. — Oregon, "on the rocky borders of the Oregon [Columbia] 

 at the confluence of the Wahlamet" [Willamette]. Range: from western 

 Oregon, Douglas County, along the Umpqua and Willamette River to the 

 Columbia and Lewis rivers in Washington, thence again in northern Washing- 

 ton, Whatcom County, and southwestern British Columbia. 



S. sessilifolia was the only one of Nuttall's species which has 

 been correctly interpreted by Andersson, who cites for the type 

 LyalVs specimens from the Sumass Prairie, of which the male is no. 

 78 and the female no. 31 in Herb. K.-* They were collected in 1858 

 "near the 49th parallel of lat." In the herbarium Andersson 

 first had named the specimen 5. Grayi, but this name has never been 

 published. For his var. villosa the type was collected by Lohh in 

 1852 in Oregon, bearing the no. 218 in Herb. K. LobVs and LyalVs 



3 Bebb's treatment of the Californian Salices in Watson's Flora was published 

 separately in 1879. 



^ Besides the abbreviations mentioned in Box. Gaz. 65 : 9 and 66: 121, the following 

 will be used: Cal., Herbarium of the CaHfornia Academy of Science; K., Kew Her- 

 barium; Jeps., Herbarium of Professor W. L. Jepson, Berkeley, Cal.; N.E., Herbarium 

 of the New England Botanical Club; P., Herbarium of the Academy of Science at 

 Philadelphia, Pa.; Reno, Herbarium of the Nevada Agric. Exper. Station, Reno, 

 Nev.; St., Herbarium of the Leland Stanford University. 



