330 BOTANICAL GAZETTE [OCTOBER 
obovato-elliptico-oblonga vel late elliptico-lanceolata ad 6-7:2- 
2.5 cm. magna, superne saepe ab initio glabra, vividius colorata, 
subtus novella tantum pl. m. dense villosa, citius quam in acutifolia 
glabrescentia, adulta fere glabra vel parce pilosa, albescentia; fila- 
menta basi sparsius pilosa, bracteae florum satis glabrescentes; 
amenta fructifera in co-typo ad 5 cm. longa et 1.5 cm. crassa, basi 
vix laxiflora, sed vulgo satis variabilia et basi pl. m. laxiflora; 
fructus pl. m. glabriores vel basi glabri. 
So far as I can see, the range of var. glabrescens extends through the Rockies 
of Alberta and British Columbia to the northwest corner of this state and 
adjacent Alaska northward into the Yukon Territory, in the vicinity of Dawson. 
It probably occurs also in Alaska and the eastern Northwest Territories 
together with var. acutifolia. 
As mentioned in the synonymy, RypBERG has used the name S. Austinae 
Bebb as the specific designation for S. glaucops glabrescens And., but he also 
determined forms of a different origin as S. Austinae. This species had been 
proposed by Bess in Watson, Bot. Calif. 2:88. 1879, but BeBB himself stated 
(in Bor. Gaz. 16:106. 1891) that it forms a mixture of 3 species, including 
S. Lemmonii Bebb and S. lasiolepis Bth. The female piece only represented 
an apparently new willow, and it is described as having “sessile aments appear- 
ing before the leaves, with small early deciduous bracts, dark scales, clothed 
with silky hairs.” I fail to see how the name given to such a different form 
can be applied to S. glauca glabrescens even if we raise this variety to a specific 
rank. 
Before it is possible to define correctly a variety like glabrescens we have 
to become much better acquainted with S. pseudolapponum, the so-called 
S. glaucops of the Rocky Mountain floras. 
A few words must be said about the “glauca”’ of northeastern 
arctic America and of Greenland. I have to take into considera- 
tion the willows of Greenland because the flora of (at least western) 
Greenland is essentially American, and the forms of Labrador and 
northeastern arctic Canada cannot be properly understood without 
elucidating those of Greenland. The best enumeration of Green- 
land’s Salix has hitherto been. given by LANGE in his Conspectus 
Fl. Green. pt. 1. 1880 and pt. 2. 1887. In 1880 he cites not less 
than 5 varieties under S. glauca, which I cannot interpret correctly 
without comparing the specimens LANGE had before him, which are 
preserved in the herbarium at Copenhagen. So far as I can judge 
by the figures and quotations cited by LANGE, none of those varieties 
