PICEA. 125 
minute flexible. — Reaching 180 feet high and 6 feet diametre. 
»,Leaves from 1—4th to one ineh long, but all 1—10th wide. Is 
it a variety of the Spruce-Fir?* Raf. 
.The second is a much more common species, and constitutes 
»at least one half of the timber in this neighbourhood. Is seems 
»to resemble a Spruce, rising from one hundred and sixty to 
,.0ne hundred and eighty feet, and is from four to six in dia- 
.Ueter, straight, round and regularly tapering. The bark is 
.thin, of a dark colour, much divided in small lonzitudinal in- 
Jterstices: the bark of the boughs and young trees is somewhat 
smooth, but not equal to the balsam fir: the wood is white, 
.very soft, but diffieult to rive: the trunk is a simple, bran- 
.ching and diffuse stem, not so proliferous as the pines and firs 
.UÜsually are. It puts forth buds from the sides of the small 
.boughs, as well as from their extremities: the stem terminates 
,like the Cedar, in a slender pointed top. "The leaves are petio- 
late, the footstalks short, acerose, rather more than half a 
»line in width, and very unequal in length, the greatest lengih 
seldom exeeed a quarter of an inch. "The leaf has a small lon- 
.Zitudinal channel on ihe upper disk, which is of a deep and 
.Zlossy green, while the under disk is of a whitish green only: 
.it yields but little rosin. What is remarkable, the cone is not 
».longzer than the end of a man's thumb, it is soft, flexible, of 
.an ovate form, and produced at the ends of the small twigs.* 
Lewis and Ctarke. 
3. .ABIES AROMATICA Raf. Aromatic-Fir. (Third Fir Lewis and 
»Clarke ), branehes bullate balsamiferous, leaves densely scat- 
,tered, forming 3 rows, sessile, lanceolate, obtuse, flexible, sul- 
,.cate and shining above, gibbous beneath. Reaching 100 feet 
S.high; blisters on the branches filled with a fine aromatie bal- 
.sam. Leaves very small, 1 — 8th of an inch long, 1— 16th 
.Wide.^ Raf. 
.The third species resembles in all points.the Canadian Bal- 
.sam-Fir. It grows from two and a half to four feet in dia- 
meter, and rises to the height of eighty or one hundred feet. 
.The stem is simple branching and proliferous, its leaves are 
sessile, acerous, one eighth of an inch in length, and one six- 
.teenth in width, thickly scattered on the twigs, and adhere to 
