iqiq] SCHNEIDER— AMERICAN WILLOWS 319 



R.R. Rep. 6^:89. 1857; And. in K. Vet.-Acad. Handl. 6:56 (Mon. 



Salic). 1867, excl. pi. 4, fig. j/ et var. — S. longijolia var. argyro- 



phylla f. angiistissima And. I.e. 55; in DC. Prodr. 16^: 214. 1868. 



sec. specim. Fremontii. — S. longijolia Greene, Man. Bot. S. Fran. 



Bay 299. 1894, pro parte max. — 6*. sessilijolia Sarg., Silva N. Am. 



9:127. 1896, pro parte; Jepson, Fl. Calif. 339. 1909, pro parte max.; 



in Mem. Univ. Calif. 2:178 (Silva Calif.). 1910, prop arte max.; 



Ball in Box. Gaz. 60:51. 1915, pro parte. 



Type locality. — California, "ad ripas fluvii Sacramento." Range: 

 central California to southwestern Oregon. 



Of S. Hindsiana I have seen a photograph of the type (K.) and 

 cot>^es (G., N.) collected by Hartweg, which are all perfectly 

 identical. It is closely related to t>^ical S. sessilijolia, from which 

 it differs chiefly by its more Unear or narrowly lanceolate and almost 

 always entire leaves, which are more or less distinctly petioled, and 

 by its usually smaller and thinner aments. If it were not for some 

 specimens which seem to combine var. Hindsiana with the northern 

 S. sessilijolia, and others that I can hardly distinguish from the 

 southern var. leucodendroides (for instance a vigorous sterile speci- 

 men from Yolo County, mouth of Buckeye Creek, Ig. R. Stinchfield, 

 no. 334; St.), I should take it for a distinct species. A closer study 

 of those forms in the field is certainly needed. 



There seems to occur, a form with almost glabrate ovaries, 

 judging by a specimen collected by R. S. Ferris in Colusa County, 

 Sycamore Slough, April 17, 191 7 (no. 619, m., f.; St.). It is other- 

 wise rather topical var. Hindsiana and needs further study. 



The range of this variety extends to Jackson County in south- 

 ern Oregon iWalpole, no. 255; Applegate, nos. 624 and 2198) in the 

 north, and to Monterey^ and Kern counties in California in the 

 south, but the southern forms like Piper's no. 6406 from Bakersfield 

 come very near var. leucodendroides. 



2C. S. SESSiLiFOLiA var. LEUCODENDROIDES Schneider in Box. 

 Gaz. 65 : 26. 1918. — S. macrostachya leucodendroides Rowlee in Bull. 



5 From this county is Brewer's no. 544, which came from the Nacimiento or Naci- 

 mento River or Creek, not " Narsismente " or "Nasismento" River, as the name is 

 spelled by Rowlee and Ball according to the label in C. It is a male specimen 

 with leaves much like var. leucodendroides , to which it may belong after all. 



