1919] SCHNEIDER, NOTES ON AMERICAN WILLOWS, VI 87 



(No. 2919, St.; a form witli narrow leaves, much resembling S. pellita, but with 

 twigs finely puberulous and stipules distinctly developed); Boville, thickets along 

 stream, September 5, 1918, J. G. Jack (No. 1355, st.; A.; '*8-l() feet high*'; same 

 as preceding), Shoshone County: Coeur d'Alene Mts., north fork of Coeur 

 d'Alene River, 950 m., x\ugust 13, 1895, J. B. Leiherg (No. 1533, st.; A., M.,N., W.). 

 Kootenai County : Coeur d'Alene, in sand along Fernau(?) Creek, April, 1914, 

 August, 1913, II. J. Jlust (No. 492, fr. partly teratological, st.; W.; ** scrubby wil- 

 low''); Fernau(?) Lake Shore, in sandy soil, same date and collector (No. 502, 

 m., St.; W.; mixed with S. Scoulcriana leaves), Bonner County: Priest Lake, 

 August, 1901, C. V. Piper (No. 3742, st.; W.); west fork of Priest River, alt. 900 m., 

 August 4, 1897, J, B. Leiherg (No. 2841, st.; W.) 



Northeastern Moxtaxa. Flat Head County: Swan Lake, alt. 1000 m., 

 August 24, 1908, M. E, Jones (No. 9138, st.; M., W.). Glacier National Park, St. 

 Mary, September 14, 1918, J. G. Jack (No. 1517, st.; A.; "5-6 feet high"). 



Alberta. Rocky Mountain District: Crow's Nest Pass, Ohlman River, 

 alt. 1300 m., August 14, 1897, J, Macoun (No. 7, st.; N.; folia Inferiora ut in S. 

 snhcoerulea sericeo-pilosa); Banff, side of Cascade Creek by bridge, alt. 1559 m., 

 June 6, August, 1899, \\\ C. McCalla (No. 2247, f., st.; N.; same as the preceding). 



9. S. Drummondiana Rarrattapud Hooker, Fl. Bor.-Am. ii. 144 (1838). — 

 Andersson in Ofv, Svensk. Vet.-Akad. Forh. xv. 123 (1858); in Svensk. 

 Vet.-Akad. Handl. vi. 137 (Monog. Salic.) (1867); in De Candolle, Prodr. 

 XVI.2 243 (18(18). — Macoun, Cat. Can. PI 448 (1880). — Henry, Fl. S. 

 Brit. Col. 99 (1915). — Rydberg, Fl. Rocky Mts. 196 (1917). — This is 

 apparently a rare and rather critical species. The material before me is 

 not sufficient to understand properly its taxonomic value, and to determine 

 clearly its relationship to the preceding group of species and to the following 

 one. The type w^as collected by Drummond in the ''Rocky Mts.," prob- 

 ably in the Edson District of Alberta. I have before me a photograph and 

 fragments of the type from the Kew Herbarium consisting of a piece with 

 young female flowers, another with half-ripened fruits, and a third one with 

 mature leaves. Besides this I saw a co-type in the Herbarium of the New 

 York Botanic Garden. Both specimens have rather broad, obovate or ob- 

 ovate-elliptic leaves ''below white with dense tomentum" as Hooker says, 

 and glabrescent on the midrib. The pubescence is opaque as in S. hclhiy 

 and not shining as in S. suhcoeriilea. The female aments and flowers are 

 very much like those of S. suhcoeruica, only the bracts of the flowers seem 

 to be narrower and more acute, and the pedicels are mostly a little longer 

 but their length seems to be rather variable in S. subcoerulea too, as also in 

 other species of this group. The main difference are the broader leaves 

 which in specimens like that of Rehder (see below) become rather elliptic- 

 lanceolate or elHptic-oblanceolate, a shape I have never noticed in S, hella 

 but sometimes in S. subcoerulea, in which however the pubescence is thinner, 

 adpressed, and silky, the veins being much more prominent. Besides the 

 shape of the leaves there is the almost entire absence of the glaucous bloom 

 of the branchlets which is so conspicuous in the two preceding species. If 

 we have a better knowledge of the flowers and fruits they may afford addi- 

 tional good characters to separate these species, but at present I dare not 

 to put much stress on the differences I have observed. I am not yet sure 



