RPoestet sia I5 
B. Twigs of only one sort, leaves evergreen, not 
fascicled; cones ripening in one season. 
Abies 
Pinus Linneus, Sp. Pl. 1000.1753. in part. 
Evergreen trees with two kinds of leaves, the 
primary scale-like, not green, deciduous, scat- 
tered and spirally arranged upon the long shoots 
of the plant, each having in its axil a dwarf 
shoot which bears a fascicle of 2-5 (rarely 1, 6 
or 7) acicular foliage leaves surrounded by a 
sheath of scale-leaves. Flowers moncecious, the 
staminate with basal involucre-like scales, fas- 
cicled at the base of the young shoots of the 
year; stamens numerous, spirally arranged; 
anther sacs two, parallel, longitudinally dehis- 
cent, surmounted by a transverse, sub-orbicular 
crest, or by a knob; pollen grains with two 
bladder-like appendages. Pistillate flowers sol- 
itary or clustered, lateral or subterminal; the 
scales much longer than the bracts; cones ripen- 
ing at the close of the second season or later, 
woody, variously shaped, often very large, the 
scales more or less thickened and callous at the 
tips. Seeds destitute of resin vesicles, usually 
