124 PICEA. 
Missouri-River and across the American continent to the Pacific 
Ocean, in the years 1804 — 1806. London 1814. p. 455 — 458.) 
confietas. Harum plersque inter species recentiorum botanico- 
rum industria advectas olim ab autoptis recognoscend», e de- 
seriptionibus stylo parum botanico exaratis vix divinabuntur. 
1. ,ABIES TRIGONA Raf. Gigantic Fir. (First Fir Lewis and Clarke) 
»bark and branches scaly, leaves densely scattered, petiolate tri- 
.£0ne acuminate and stiff. — Stated to be the largest tree of 
»North- America, some reaching 300 feet high, 200 without 
branches, and 42 feet around.  Petiols trigone also, leaves 
»9—Áths of an inch long, 1—10th wide.^ Raf. 
»The first species grows to an immense size, and is very 
commonly twenty-seven feet in circumference, six feet above 
»the earth's surface: they rise to the height of two hundred and 
»thirty feet, and one hundred and twenty of that height without 
»,2 limb. We have often found them thirty-six feet in circum- 
»ference. One of our party measured one, and found it to be 
»forty-two feet in cireumference, at a point beyond the reach 
»0f an ordinary man. "This trunk for the distance of two hund- 
»red feet was destitute of limbs; this tree was perfectly sound, 
»and at a moderate caleulation its size may be estimated of three 
»hundred feet. "The timber is throughout, and rives better than 
,any other species; the bark scales off in flakes irregularly round, 
,and of a reddish brown colour, partieularly the younger growth. 
».The trunk is simple, branching and not very proliferous. "The 
leaf is acerose, one tenth of an inch in width, and three fourths 
,in length, firm, stiff and acuminate. It is triangular, a little 
»declining, thickly scattered on all sides of the bough, and springs 
»from small triangular pedestals of soft, spongy, elastie bark 
,at the junetion of the boughs. "'lhe bud scales continue to en- 
»circle their respective twigs for several years. Captain Lewis 
has counted as many as the growth of four years beyond the 
Scales. It yields but little rosin, and we have never been able 
»to discover the cone, although we have killed several.^ Lewis 
and Clarke. 
2. ,ABIES HETEROPHYLLA Raf. Odd leaved Fir. (Second Fir Lewis 
»and Clarke), bark rimose, leaves distichal petiolate, very un- 
»equal, suleate above, glaucous beneath, cones terminal ovate 
