1030 ARBORETUM ET FRUTICETUM BRITANNICUM. 
of the scale, scarcely broader than the wing 
of the fruit, which is straight on both margins 
towards the apex. Found on the Altai Moun- 
tains, at an elevation of 5272 ft. Flowering in 
May ; not yet introduced. 
Professor Don informs us that he strongly sus- 
pects this tree to be only a northern form of Abies 
Smithidna. Ledebour, he says, has committed the 
same error in regard to his P. obovata, as Dr. 
Wallich did in the case of Abies Smithidna ; that 
is, he has described the cones as erect, while, from 
the other parts of his description, the tree must 
belong to the genus Abies. 
B. Natives of North America. 
£4, A. a’tBa Miche, The white Spruce Fir. ae fekias 
Identification. Michx. Fl. Bor. Amer., 2. p. 207.; N. Amer. Syl., 3. p. 182. 
Synonymes. Pinus 4lba Att. Hort. Kew. 3. p.371.; P. laxa Ehrh. Beitr. 3. p. 24.; P. canadénsis 
Du Roi Harbk. p. 124.3 A. curvifdlia Hort. ; single Spruce, Amer. ; Epinette blanche, Canada ; 
Sapinette blanche, Fr. 
Zngravings. Lamb. Pin., ed. 2., 1. t. 36.; Michx. N. Amer. Syl., 3. t. 148.; the plate of this tree 
in Arb. Brit., Ist edit., vol viii. ; and our jig. 1928. 
Spec. Char., §c. Leaves somewhat glaucous, scattered round the branches, 
erect, quadrangular. Cones oblong-cylindrical, pendulous, lax ; scales with 
entire margins. (Michx.) Cones from |2in. to 2in. long, and from & in. 
to &in. broad; on the tree at Dropmore, 4in. long. Seed very small; with 
the wing, 2 in. long, 4,in. broad. Leaves 2 in. long; on the tree at Drop- 
f ‘ 
more, twice the length of those of A. nigra, very glaucous when they first 
1928. A. Alba. 
come out. A tree Canada to Carolina, throughout the tracts of high 
mountains. Height 40 ft. to 50ft. Introduced in 1700. It flowers in 
May and June, and the cones are ripe in the April following. 
Variety. 
f A. a. 2 ndna Dickson of the Chester Nursery.—A low-growing plant, 
apparently somewhat distinct. 
Other Varieties. Loiseleur Deslongchamps states that, according to the 
specimens of A. orientalis which Tournefort brought from the Levant, this 
alleged species cannot be separated from A. alba. He therefore introduces 
A. orientalis Tourn., Poir. Dict. vi. p. 508., and Lamb. Pin. ed. 1. ii. t.39., 
as a variety of A. alba. We have retained it as a species (No. 2.), though 
we have great doubts as to its distinctness. 
The general aspect of the white spruce is much lighter than that of any 
other species of the genus. The bark is considerably lighter in colour than 
