Acorns and loose leaves from different trees.]

=Remarks.=--Wood similar and uses generally the same as white oak. The

tree usually grows in such poor situations that it never acquires a

large diameter, and it is only when a tree is found in a cove or in

richer and deeper soil that it grows to a large size. The amount of this

species is very limited and it is therefore of no especial economic

importance as a source of timber supply. The bark is rich in tannin. The

crests of chestnut oak ridges are often cut bare of this species. The

trunks are made into crossties, and the larger branches are peeled for

their bark. The nuts germinate on top of the ground as soon as they

fall, or even before they fall. Usually a large percentage germinate.

The tree grows rapidly where soil conditions are at all favorable. It is

believed that this species should be used to reforest the chestnut oak

ridges of the State, and possibly it would be one of the best to employ

on the slopes of other poor ridges.

=6.= =Quercus stellàta= Wangenheim. Post Oak. Plate 45. Medium to large

trees; bark resembles that of the white oak except on old trees the

fissures are deeper when compared with a white oak of equal size, and

the ridges are usually broken into shorter lengths; twigs stout,

yellowish-brown at first, remaining this color more or less to the end

of the season, at first densely covered with hairs which remain

throughout the season, and usually one year old branchlets are more or

less tomentose; leaves on hairy petioles 0.3-3 cm. long, generally about

1 cm. long; leaves obovate in outline, commonly 1-2 dm. long and about

2/3 as wide, and generally lobed into five principal lobes which are

disposed as follows: the two basal are formed by two deep sinuses just

below the middle of the leaf which cut off a large roughly triangular

portion, one angle of which forms the base, the top two angles prolonged

on each side into a rounded lobe which may be long or short; the

terminal lobe is produced by two deep sinuses which constrict the blade

at about 1/4-1/3 its length from the apex; the two basal and two

terminal sinuses form the two lateral lobes which in size are equal to

about one half of the leaf area; the lateral lobes are generally

ascending with the terminal portion usually indented with a shallow

sinus which produces two short lobes; the terminal lobe of the leaf

commonly has two or three shallow secondary lobes; all the lobes of the

leaf are rounded; base of leaf narrowed or rounded; leaves very thick at

maturity, when they first appear both surfaces are densely covered with

a yellowish pubescence, at maturity the upper surface is a dark glossy

green, and smooth or nearly so, except some leaves retain fascicles of

hairs, and the midrib and principal veins may be more or less rough

pubescent, the under surface at maturity is a gray-green, and remains

more or less densely covered with fascicles of hairs; acorns single or

in clusters, sessile or nearly so; nuts small, ovoid 10-15 mm. long and

6-10 mm. wide, inclosed for about 1/2 their length in the cup; scales

ovate, gray or reddish brown, tomentose on the back, blunt except those

near the top of the cup which are sometimes acute; kernel sweet.

[Illustration: Plate 45.

Trees of Indiana First Revised Edition (Publication No. 13, Department of Conservation, State of Indiana) · 第 90 / 265 题