640 
taxifolia» 
mnadensis» 
nigra» 
rulra. 
DICLINIA CONlFEKjE. PhlllS. 
sembles the preceding in several respects, but differs 
at first sight in being a smaller tree, the leaves shorter 
and more erect, and the cones not one fourth the size. 
Messrs. Frasers introduced this tree into England a 
few years ago. 
3. P. foliis solitariis planis subdistichis, conis oblongis, an- 
theris didymis. — Lambert, monogr. p. 51. 33. 
On the banks of the Columbia. M. Lewis. On the 
north-west coast. Menxies. b • Herb» 
Lewis. I'his elegant and tall tree has some resem- 
blance to the following one, but the leaves are more 
than twice the length. 1 have among my specimens 
two varieties^ or probably distinct species, which for 
W'ant of fructification I cannot decide : one has acute 
leaves, green or» both sides ^ the other emarginate 
leaves, glaucous underneath. 
4. P. folds solitariis planis denticulatis subdistichis, strobilis 
ovatis terminalibus vix folio longioribus. Lambert» 
monogr. p. 50. t. 32. 
P. americana. Du Roi harbk. 2. p. 10/. 
Icon. Lambert. l. e. Mich. arb. 1. p. 13/. t. 13. Wangh. 
amer. t. \5.f. 36. 
In the most northern regions of Canada and on the high- 
est mountains, as far south as Carolina. Tj . May. 
V. V. The Hemlock Spruce is a very elegant tree, and 
grows in some situations to an enormous size ; its 
bark is a fine substitute for oak-bark in tanning. 
5. P. foliis solitariis tetragonis undique sparsis erectis strictis 
strobilis ovatis, squamis ellipticis margine undulatis 
apice eroso-denticulatis. — Lambert, monogr. p. 41. i 
t. 27 . 1 
P. mariana. Du Roi harbk. 2. p. 107 . 
P. denticulata. Mich.Ji. amer. 2. p. 206. 
Icon. Lambert, l. c. Mich. arb. 1. 11. Mill. ic. 1. 
t. 1. 
From the more northern parts of Canada to Carolina, 
throughout the tracts of high mountains, b . May. 
V. V. The Black Spruce or Double Spruce is, besides 
its great mechanical use, the tree of vyhich that whole- 
some beverage calld Spruce Beer is made. 
6. P. foliis solitariis subulatis, strobilis oblongis obtusi», 
squamis rotundatis subbilobis margine integris. Lam-= I 
bert. monogr. p. 43. f. 28. 
Abies pectinata. Lamarck, encycl. 6. t. 523. 
