1920] SCHNEIDER, NOTES ON AMERICAN WILLOWS. X 87 



Island, fifty miles north of Fort Resolution, July 10, 1901, E,A, &A,E. Preble (Nos, 

 133, 134, f.; W.); Slave River, about 45 mi. from mouth, August 29, 1914, F. Har- 

 per (No. 99027, St.; O.); Fort Resolution, July 14, 1901, E. A, <Sc A. E. Preble (No. 

 151, St.; W,); June 21, 1903, E, A. Preble (No. 201, f,; W.); Nahami Mts., June 6, 

 1904, same coll. (No. 317, f.; W.); Churchill, Hudson Bay, August 2, 1910, /. M. 

 Macoun (No. 79152, fr.; O.) 



Yukon Territory. Vicinity of Dawson, island near footbridge, July 13, 1899, 

 i?. S, Williams (fr.; N.); same vicinity, April 26, 1914, A. Eastwood (No. 16, 

 winter-buds; A.); June 29, 1914, same coll. (No. 31, st.; A.; ad var. glabram spec- 

 tans); May 21, 1914, same coll. (No. 56, partim, f.; A.; ut praecedens); May 14, 

 1914, same coll. (Nos. 56, partim, f., 57, m.; A,); May 15, 1914, same coll. (Nos. 64,. 

 m., 65, f.; A.); May 21, 1914, same colL (Nos. 85, f., 87, m.; A,); May 23, 1914, 

 same coll. (Nos. 98, m., 99, f., 100, m.; A.); May 26, 1914, same coll. (No. 106, f.; A.); 

 June 2 and 3, 1914, same coll. (Nos. 129, m,, 130, f.; A.); July 13, 1914, same colK 

 (No. 217, fr. submat.; A.; var. glabra); July 14 and 15, 1914, same coll. (Nos. 229, 

 239, 240, fr.; A.); June 19, 1914, same coll. (Nos. 301, st.; var. glabra; 302, fr.; A.); 

 West Dawson, July 16, 1902, J. Macoun (No, 54402, st. ; O, : "a small straight tree '*) ; 

 trail to Moosehide, July 1, 1914, A, Eastwood (No. 467, st. sure; A.); islands in 

 Klondike River, July 15, 1902, J. Macoun (No. 54401, fr.; O., partim var. glabra)\ 

 Colorado Pup, July 29, 1902, same coll. (No. 54400, st.; O.); Ogilvie, July 8, 1914, 

 A, Eastwood (No, 540, st.; A., var. glabra); Hard Luck Slough, July 10, 1914, 

 same coll. (No. 5G5, fr.; A.); Cormacks, July 1, 1914, same coll. (No. 584, st,; A.); 

 Carcross, Lake Bennett, July 16, 1914, same coll. (No. 725, st.; A.); IngersoU 

 Islands, moist sloughs and river bottoms, May 28, 1899, M. W* Gorman (m., f.; N.; 

 "this willow is much eaten by Moose"). 



Alaska. White Pass, July 23, 1914, A, Eastwood (No, 800, fr.; A.; an uncer- 

 tain form of which the young leaves are rather tomentose along the under side of 

 the midrib); Fort Gibbon on Yukon River, August 1, 1905, C A^. //. Heideman 

 (No. 83, St.; W.; forma incerta; surculi foliis elliptico-lanceolatis membranaceis ad 

 10:2.2 cm. magnis breviter acuminatis subtus glaucis tenuiter brevissime adpresse 

 sericels stipulis llnearibus). 



Alberta. Jasper Park, near Jasper, July 22, 1917, J. M. Macoun (No. 95376, 

 St.; A., O.); Athabasca River, July 23, 1918, same coll. (No. 95373, fr.; A., O.), 

 same River, near bridge, east end, mixed alluvial soil and gravel, June 20, 1918, 

 same coll. (Nos. 95750, m.. 95751, fr. submat.; 95769, f.; 95770, m .. f.; A., O.) 



The localities of Drummond's specimens are uncertain. They are pre- 

 served in Herb. N. under "No. 61, Hb. H.B. & T./' fr., "marshes near 

 Rocky Mts.*'; "No. 62, Hb. H.B, & T." f., and "No. 63, Hb. H. B. & T/' 

 St. No. 62 is Drummond's No, 663, 



As a variety may be kept 



S. arbusculoides var. glabra Andersson in Svensk. Vet.-Akad. Handl. 

 VI. 148 (Monog. Salic.) (1867). — S. acutifolia Hooker ^ Fl. Bor.-Am. ii. 150 

 (1839), non Willdenow. — S. humillima var. glabra Andersson in De Can- 

 dolle, Prodr. x\a.^ 248 (1868). — S. saskatchavana von Seemen in Bot. Jahrb. 

 XXI. Beibl. 52, 7 (1895). — S. sasJcatckewana Rydberg, Fl, Rocky Mts. 

 198 (1917). — This is probably nothing but a glabrescent form and needs 

 further observation. I refer to it the specimens mentioned as var. glabra 

 in the enumeration above, and Richardson*s plant from Fort Franklin pre- 

 served under "No. 65 Hb. H.B. & T.'' in Herb. N. 



As to the true relationship of S. arbusculoides I do not wish to make a 

 definite statement. Sometimes the leaves have rather numerous stomata 



