1918] SCHNEIDER—AMERICAN WILLOWS 327 
As previously stated, ANDERSSON also described a S. glaucops 
var. glabrescens from specimens collected by BourGEAU in 1858, 
probably in Alberta, Rocky Mountains district, near the Bow River 
Pass. The description runs thus: “8, glabrescens, amentis crassis 
vulgo multifloris, foliis rigidioribus supra sparse pilosis demum 
glabris subtus sat intense glaucis.’’ Furthermore he said: ‘‘quan) 
autem glabrescentem appelavi longius distat et S. chlorophyllam (e 
typo S. phylicifoliae) non parum revocat, foliis glabris supra lucidis 
et nervosis subtus glaucis reticulatis, amentis multo brevius pedun- 
culatis et capsulis distinctius pedicellatis. Ad S. desertorum mani- 
festissimum praebet transitum.’’ There is a specimen of Bour- 
GEAU’S in Herb. G. which, in my opinion, represents a co-type of 
ANDERSSON’s variety. It bears the label of PALLISER’s Expedition 
and is named “S. glauca L. x pallida glabrata And.’’ ANDERSSON 
not infrequently changed a name in his publication after having 
marked the herbarium sheets in a different way. The specimen 
consists of 2 pieces of well fruiting branchlets. The aments meas- 
ure up to 5:1.5 cm. and do not differ from typical var. acutifolza 
(syn. var. villosa) as collected by BourGEAU and Drummonp in the 
Rockies. The co-type before me apparently represents a less gla- 
brescent form, and it approaches much the other variety, with 
which it seems connected by a whole series of intermediate forms. 
The most glabrous ones I have seen were collected in the vicinity 
of Dawson, Yukon Territory. I deem it best to give the following 
characteristics and synonomy of the two varieties: 
1. S. GLAUCA var. acutifolia, comb. nov.—S. villosa Barratt apud 
Hooker, Fl. Bor.-Am. 2:144. 1839, p.p.; SEEMANN, Bot. Voy. 
Herald 39 (Fl. W. Eskimaux Land). 1852.—5S. villosa var. acutt- 
folia Hook., Fl. I.c.—S. glauca var. villosa And. in Ofv. K. Vet.- 
Akad. Férh. 15:127. 1858, p.p.—S. glaucops a villosa And, in DC. 
Prodr. 16?:281. 1868, p.p.—S.. glauca Richardson in FRANKLIN, 
Narr. Jour. Polar Sea, Bot. App. 753. 1833, non L.; CovILLE in 
Proc. Wash. Acad. 3:321. pl. 39. 1901.—?S. glauca subarctica 
Kjellman, Fanerog. Vest-Eskim. Land 51. 1883, in Nordenskiéld, 
Vega Exp. Vet. Takttag. 2:51. 1883, non Ldstr.—S. Seemannii 
Rydbg. in Bull. N.Y. Bot. Gard. 2:164. 1901.—S. glauca, var. 
Seemanii Ostenfeld in Vid.-Selsk. Skrift. I. Math.-Nat. Kl. 1909. 
