226 Rhodora [DECEMBER 
and apparently only through his extreme caution in characterizing 
new species was it allowed by Mr. Bebb to pass so long for the little 
known Salix adenophylla Hook. Hooker’s species from Labrador is 
still known only from the original specimens and descriptions, but so 
many of the older and hitherto obscure northern species have recently 
come to light that we may confidently hope soon to understand more 
clearly S. adenophylla. At present our best information upon this 
species is that given in the original description by Hooker and later 
from the type material by Andersson. It is noteworthy that Hooker, 
following the system of Barratt, placed his Labradorean S. adenophylla 
immediately after S. speciosa and S. Barrattiana (two of our most 
remarkable willows, with the large aments chiefly sessile at the tips 
of the old branchlets) and not in the section with S. cordata to which 
S. syrticola, the shrub of the Great Lake region, is clearly related. 
The original description of S. adenophylla gives account of little 
besides the leaves: ‘‘foliis ovatis basi cordatis acutis... . argute 
serratis serraturis elongatis glanduliferis....stipulis ovato-cordatis 
grosse glanduloso-serratis"; ! but that the elongate glanduliferous 
serratures were sufficient in Hooker's mind to distinguish the species 
is shown by his note: “I know no species like this, well marked as it 
is by the copious long narrow serratures to the leaves tipped with a 
gland, so that the leaf looks as if it were fringed with pedicellated 
glands." ' This remarkable character of the foliage is sufficient, 
even if the habitat, Labrador, were not almost convincing, to show 
that Hooker's plant could not have been the same as the common 
sand dune shrub of the Great Lakes; and when we refer to Andersson's 
account? of the Hookerian type, we find added corroboration in the 
statements of other characters: ''folia.... majora pollicem longa” 
(in S. syrticola the larger are a full decimeter — 4 inches — long, and 
the smallest examined are 3 em. long); the fully mature fruiting ament 
**14 poll. longa" (in S. syrticola 5-10 cm. — 2-4 inches); "squamis 
....glabriusculis” (in S. syrticola very densely and persistently long- 
silky or tomentose); “pedicello cinereo" (in S. syrticola glabrous and 
straw-colored). 
GRAY HERBARIUM. 
! Hook, Fl, Bor.-Am., ii, 146 (1839), ? DC, Prodr, xvi, 254 (1864). 
