158 : ROWLEE: Two NEW WILLOWS 
(2 mm.) style which is deeply divided, each division bifid ; gland 
large ; stamens 2, filaments glabrous. 
The type of this species is Mr. McCalla’s 2257, collected in 
Alberta, British Columbia, on the “higher mountain slopes in 
rather wet ground (alt. 6500-7800 ft.), June 30, July 18, and 
August 30, 1899.’’ Our specimens still retain the balsamic odor 
which in the fresh plant was as ‘strong as that of Balm of Gilead, 
and much like it.”’ 
It is quite probable that our species is S. Barrattiana var. 
angustifolia Anders. in DC. Prodr. 167: 247. In floral characters 
it is much like S. Barrattiana Hooker, as understood by Mr. 
Bebb and subsequent students, but differs fundamentally in form 
and vesture of the leaf. One (both are marked “B ”) of the two 
pistillate leafy twigs represented in Hooker’s plate of S. Barrattiana 
seems to have been based on this shrub. The other pistillate leafy 
twig, the details of leaf and floral structure, and the description, 
apply to S. Barrattiana, which has “leaves cordate at the base.” 
Present knowledge would therefore indicate that three species 
may be recognized in connection with the Barrattiana group: S. 
Barrattiana Hooker and S. Tweedyi (Bebb) Ball, both of which- 
have leaves thin and green and cordate at the base, but differ in 
that the former has leaves and capsules with a conspicuous silky 
vesture ; S. a/bertana has thick opaque leaves, acute at the base 
and apex and agrees with S. Barrattiana in vesture. All three 
have styles and stigmas which are characteristic and all have the 
same peculiar glands on the margins of the stipules and leaf- 
blades. 
Salix Maccalliana sp. nov. 
Shrub 1-2 meters high. Young shoots and leaves minntely 
puberulent, soon becoming glabrous throughout ; bark upon older 
branches dark-brown; buds yellow, rather large, flattened, pointed ; 
leaves elliptic-lanceolate, 6-7 cm. long, 1.5 cm. wide, tapering 
equally to both ends, green and glabrous on both sides at matur- 
_ ity, finely but distinctly serrate, the serrations terminating in a 
characteristic callus, petioles 0. 5-0. 75 cm. long, the petiole, mid- 
rib and primary veins light-yellowish and in strong contrast to the 
green of the rest of the leaf which is obscurely reticulately veiny 
both sides ; stipules none; aments borne on short leafy peduncles, 
the axis and the upper part of the peduncle hoary-canescent ; 
flowers densely aggregated in the ament at anthesis, the pistillate 
