1918] SCHNEIDER—AMERICAN WILLOWS 353 
Soc. Edinbgh 9:430. 1868, pro parte). I have seen nothing identi- 
cal with this variety; there is only one specimen before me from 
the ‘Kvanefjord S. f. Frederickshaab,”’ collected in 1886 by L. K. 
Rosenvinge (no. 18873 O., fr.) which I should take for a small- 
leaved form of S. anamesa, the narrowly elliptical leaves measuring 
up to 21:9 mm. 
I can only repeat that we have to make a much closer investi- 
gation of the so-called S. glauca of Greenland in order to decide 
which of the forms can really be referred to the European species. 
They are certainly not identical with the var. acutifolia and var. 
glabrescens previously mentioned. I strongly believe that the true 
S. glauca is entirely absent from Eastern North America, and here 
represented by S. cordifolia and its varieties. It is the main pur- 
pose of these explanations to call attention to what is still unknown 
of the difficult forms of this group of willows, of which the following 
remains to be discussed. 
10. S. LINGULATA Andersson in DC. Prodr.: 167:281. 1868; 
Herder in Act. Hort. Bot. Petrop. 11:437. 1891.—This is a very 
poorly known Alaskan species not mentioned by CovILLe. 
ANDERSSON described it from specimens collected by Kostalsky ‘ad 
Alaxa”’ as a low shrub resembling in habit a small S. arbuscula. 
There are a few fragments in herb. N. ex Herb. Fischer which agree 
well with ANDERSSON’s description (except that the leaves are not 
quite glabrous above), but are much too scanty to give a distinct 
impression of this species. The flowers, etc., suggest those of 
S. desertorum, and S. lingulata is certainly closely connected with 
the species of the GLAUCAE with pilose filaments, but has nothing 
in common with S. reticulata, to which it is said by ANDERSSON 
“capsulis globoso-ovalibus . . . . sat evidenter referrens.” 
ARNOLD ARBORETUM 
Jamaica Prat, Mass. 
