157 
ON SALTX GRAIL4MI, Borrer, A WILLOW ALLIED TO S. 
HERBACEJ, GATHERED BY THE LATE PROF. GRAHAM 
IN SUTHERLANDSHIRE. 
By J. (x. Bakek, Esq., F.L.S., etc. 
(Plate LXVI.) 
In Mr. Borrer's collection at Kew are three sheets (one from thi 
original wild station, and two from a bush transferred to his garden) 
of specimens of a willow gathered by the late Professor Graham at 
Frouvyn in Sutherland shire, which Mr. Borrer has marked " Sallx 
Grakami, inedit." and again, "Extraordinary variety of S. kerbacea" 
which differs considerably from onr ordinary S. herbacea, and is further 
interesting as throwing light on the affinity of the latter with S.polaris. 
The following is a summary of its characters, as shown by these spe- 
cimens: — Shoots trailing, six to nine inches long, copiously branched, 
the young branches clothed with adpressed grey silky hairs, the old 
bark naked and shining purplish-brown. Petioles silky, about an 
eighth of an inch long. Leaves broad-oblong, or with a slightly ob- 
ovate tendency, half to three-quarters of an inch long when the plant is 
m Sower, by three-quarters as broad, the under surface thinly clothed 
w *th adpressed silky hairs, even the branch veinlets conspicuously 
raised, the upper surface naked and shining, the bnse rounded, the 
a pex generally mucronate with the point often twisted, the edge 
faintly crenate. Catkins terminal on leafy shoots about an inch long, 
or 
o 
the catkin oblong-cylindrical, lax, about three-eighths of an inch Ion 
when in flower, with under a dozen flowers, the scale Ungulate, scariose, 
an eighth of an inch long, ciliated and thinly silky on the back ; the 
pedicel half as long as the scale, densely silky up to the very base of 
the ovary j the ovary a line long, naked ; style equalling the pedicel ; 
stigmas bifid, with linear divisions. 
F rom S. herbacea it differs by its stronger growth, the silky branches 
and un <ler surface of the leaves, densely silky pedicel, and more elon- 
gated pedicel and style. S. polaris, Wahl., has been universally ad- 
^tted as a good species, belting the world in arctic and subarctic 
latitudes, in Europe, says Wiromer,* not passing south of the parallel 
of 63 °- This has a habit and leaf not appreciably different from those 
Wimmer, c Salioes Eurojwea?,' p. 127. • 
V0L - V. [ JUNE i$ 1867> ] N 
