Of deciduous trees the sycamore, wych-elm, horse-chestnut, beech, lime, plane and poplar may be used, - the abele or white poplar, Populus alba, being one of the most rapidgrowing of all trees, and, like other poplars, well suited for nursing other choicer subjects; while of evergreens, the holm oak, holly, laurel (both common and Portugal), and such conifers as the Scotch, Weymouth and Austrian pines, with spruce and (South.) silver firs and yews, are suitable.
The hills are almost everywhere well wooded, the predominant trees being firs and beeches.
The firs are distinguished from the pines and larches by having their needle-like leaves placed singly on the shoots, instead of growing in clusters from a sheath on a dwarf branch.
In this belt and the following one of firs the big tree also grows.
Ou preuves de l'existence du firs de Louis XV I.
In the forest the harness bells sounded yet more muffled than they had done six weeks before, for now all was thick, shady, and dense, and the young firs dotted about in the forest did not jar on the general beauty but, lending themselves to the mood around, were delicately green with fluffy young shoots.
Numerous other firs are common in gardens and shrubberies, and some furnish valuable products in their native countries; but they are not yet of sufficient economic or general interest to demand mention here.
When standing in an open space, the larch grows of a nearly conical shape, with the lower branches almost reaching the ground, while those above gradually diminish in length towards the top of the trunk, presenting a very symmetrical form; but in dense woods the lower parts become bare of foliage, as with the firs under similar circumstances.
Above the firs come the tamarack, constituting the bulk of the lower Alpine forest; the hardy long-lived mountain pine; the red cedar or juniper, growing even on the baldest rocks; the beautiful hemlock spruce; the still higher white pine, nut pine, needle pine; and finally, at io,000 to 12,000 ft., the dwarf pine, which grows in a tangle on the earth over which one walks, and may not show for a century's growth more than a foot of height or an inch of girth.
Only the dead-looking evergreen firs dotted about in the forest, and this oak, refused to yield to the charm of spring or notice either the spring or the sunshine.