1044 ARBORETUM ET FRUTICETUM BRITANNICUM. 
forests ; towards an elevation of 5272 ft., it gradually becomes more rare, 
. Height 30 ft. to 50 ft. Introduced in 1820. 
It differs from a silver fir chiefly in having the leaves closer set on the 
branches, and not so silvery beneath. Professor Don suspects it to be only the 
Siberian variety of Picea pectinata, which ranges from the Atlantic to the Pacific. 
B. Natives of North America. 
2 6. P.watsa‘mEA. The Balm of Gilead, or American, Silver Fir. 
Synonymes. Pinus balsimea Lin. Sp. Pl. 1421.3 P. 
A‘bies balsimea Marsh. Arb. Amer. p. 102. “dies 
Taxi folio, &c., Hort. Ang/. 2. p. 2.; A. balsaminea N. 
Du Ham. 5. p, 295. ; A. balsamifera Michr. N. Amer. 
Syl. 3. p.191.; Balsam Fir; le Baume de Giléad, le 
Sapin Baumier de Giléad, Fr. ; Balsam Fichte, Balsam 
Tanne, Ger. ; Pino balsamifero, Ital. 
Engravings. Lamb. Pin., ed. 2., 1.t. 41. f. 2.3; Mich. N. 
Amer. Syl., 3. t. 150. ; and our jig. 1954. to our usual 
scale; aud figs. 1952. and 1953. of the natural size. 
Spec. Char., $c. Leaves solitary, silvery 
beneath, apex emarginate or entire ; 
somewhat recurved, and spreading. Cones 
cylindrical, violet-coloured ; and pointing 
upwards. (Michx.) Leaves 3 in. long. 
Cones 4 in, to 42 in, 
long, and 2 in. broad; 
scales from Sin. to 
£in. broad, and & in. 
long. Seed, with the 
wing, £ in. long, and 
2in. broad. Seed 
very small, irregular; 
about half the size | 
of that of the com- 
mon silver fir. Co- 
tyledons,? A tree. 
Canada, Nova Scotia, New England, and pte 
1952. P. balsamea, 
on the Alleghany mountains, in high and 
cold situations. Height 20ft. to 30 ft. 7A LS 
rarely 40 ft. Introduced in 1696. Flow. = aT SY 
ering in May, and ripening its cones in Y 
the autumn following, y 
Variety. 
2 P. 2b. 2 longifolia Booth. — Leaves 
longer than in the species, with the 
branches somewhat more upright. 
A pyramidal tree, 1953. P. balshmea. 
in general appear- 
é ance resembling the silver fir of Europe; but seldom 
found, even in America, above 20 or 30 feet in height, 
and not of more than the same number of years in 
duration. The rate of growth, in the climate of 
London, is rather more rapid than that of the silver 
fir, the tree attaining the height of 102 ft. in as 
many years, and arriving at maturity in 20 or 25 
years ; soon after which it dies. Seeds are generally 
1954. P, balsmeas imported, and cones are sometimes ripened in this 
country. 
£7, P.(s.) Fra'serz. Fraser’s, or the double Balsam, Silver Fir. 
Synonymes. Pinus Fraser’ Pursh Fl. Amer. Sept. 2. p. L ii 3 Abi 
Fraser? Lindl. in Penny Cyc., No. 5. 4 eR PER AE RS WS Aa Ae 
Engravings. Lamb. Pin,, ed. 2,1, t. 42.5 and our figs. 1956, 1957. 
