1574 ARBORETUM AND FRUTICETUM. PART III. 
when young, afterwards glabrous, or nearly so, and shining, green, or tinged, 
especially in the female, with brown. Petioles downy, spreading, rather 
long. Leaves by no means remarkably thin ; ovate or more or less rhomboid, 
and having a short, decurved, somewhat twisted point; on. strong young 
shoots more oblong; dark green above and moderately shining ; glaucous 
beneath ; sprinkled, when young, on both surfaces with appressed hairs, 
some of which remain in the advanced state; veins sunken on the upper 
surface, very prominent on the under one; margin rather closely serrate, or 
rather crenate, especially about the middle of the leaf, with a glandular 
tooth in the notches. Stipules small, except on very vigorous shoots, half- 
heart-shaped, pointed, serrated, beset with glands on the edges and on the 
lower part of the disk. Catkins appearing in May, before the expansion of 
the leaves; cylindrical, about 1 in. long when in full flower. Flowers closely 
imbricated. Stamens thrice as long as the bractea.” There are plants at 
Woburn, Henfield, and Flitwick, and also in the Goldworth Arboretum. 
? Variety. Mr. Borrer states that he has, in his collection at Henfield, from 
the same locality as the species, what seems a variety of it; having silky 
hairs on the upper half of the ovary and towards the base of its stalk. This 
is, perhaps, the plant mentioned in the Flora Britannica, as deserving further 
investigation. (Borrer in Eng. Bot. Suppl.) 
% ¥ 121. S. propi’nqua Borr. The nearly related, or flat-leaved, upright, 
Mountain Willow. 
Identification. Borr. in Eng. Bot. Suppl., t. 2729. ; Hook. Br. Fl., ed. 3. 
be a ar female is described in the Specific Character ; and described and figured in Eng. 
Bageaeiet Eng. Bot. Suppl., t. 2729. 
Spec. Char., §c. Upright. Young shoots pubescent with minute down. 
Leaves elliptical, obscurely crenate, nearly flat, nearly glabrous on both 
surfaces; veins slightly sunken; under surface pale green... Stipules small, 
vaulted, glanded. Ovaries stalked, silky towards the point. Style longer 
than the notched stigmas. (Borrer in Eng. Bot. Suppl.) Finding in this 
some apparently distinctive characters, we venture, after much hesitation, 
to add another presumed species to a section of the genus, of which almost 
every species is doubtful. It was discovered in Britain by Mr. Anderson, 
and we know it only from plants received from him. Planted by the side 
cf S. petrae‘a, it has attained, in the same period, scarcely half the height of 
that. (Idid.) S. petrz‘a is, in some instances, more than 15 ft. high. There 
are plants at Henfield, and in the Goldworth Arboretum. 
% 122. S. petrr®‘a Anders. The Rock Sallow, or Willow. 
Identification. First distinguished by Mr. G. Anderson, who is understood to have given to it the 
name of S. petra‘a. (Borrer in Eng. Bot. Suppl.) Forbes in Sal. Wob., No. 97.; Borrer in Eng. 
Bot. Suppl., t. 2725. ; Hook. Br, Fl, ed. 3. 
Synonymes. 8S. arbascula Wahlenb., Koch Comm., p. 45., where Koch has remarked that he has thus 
adjudged the S. petree‘a Anderson from a specimen derived from Anderson. “ It is surely byerror 
that Koch has placed S. petre‘a under his S. arbiscula, with S. phylicifdlia Smith, and not under 
his own S. phylicifdlia, with S. Ammannzdna and its allies.’’ (Borrer in Eng. Bot. Suppl.) If Koch 
had known the S. petrz‘a inthe living plant, I believe that he would have referred it to his 
own S. phylicifolia. (Borrer in a letter.) 
The Sexes. The female is described and figured in Eng. Bot. is Lar and in Sal. Wob. 
Engravings. Sal. Wob., No. 97.; Eng. Bot. Suppl., t. 2725. ; and our jig. 97.in p. 1620. 
Spec. Char., §c. Upright. Young shoots densely hairy. Leaves oblong, ser- 
rated, carinate, twisted, reticulated with deeply sunken veins ; beneath, hairy, 
glaucous, at length pale green. Stipules large, half-heart-shaped, flattish, 
having few glands. Ovary stalked, naked, wrinkled towards the point. Style 
divided, longer than the cloven stigmas. JS. petrz‘a is nearly allied to S. 
hirta Smith Eng. Bot., t. 1404.; and still more nearly, perhaps, to S. sty- 
_  laris of Seringe Monogr. des Saules de la Suisse, p. 62. (Borr. in Eng. Bot. 
+ Suppl.) A British kind of willow, first distinguished by the late Mr. G. 
» Anderson, who communicated the plants from which our figure was drawn. 
We have wild specimens from the mountains of Breadalbane. The kind is 
a shrub, in some instances upwards of 15 ft. high, with crooked ash-coloured 
, 
