Acorns from different trees.]

=9.= =Quercus imbricària= Michaux. Shingle Oak. Plate 48. Medium to

large sized trees; leaves on petioles generally 0.5-1 cm. long, 7-16 cm.

long, elliptic to oblong-lanceolate, narrowed or rounded at the base,

apex generally sharp-pointed and ending with a bristle, sometimes very

wide leaves are blunt at the apex, margins entire, when they first

appear the upper surface is somewhat woolly and the under surface

whitish with a dense tomentum, soon glabrous and a dark green above,

remaining more or less densely woolly or pubescent beneath; acorns

sessile or nearly so, solitary or in pairs; nuts ovoid, about 1 cm. long

and enclosed for about 1/2 their length in the cup; cup rounded at the

base; scales pubescent on the back and obtuse.

=Distribution.=--Pennsylvania, Michigan to Nebraska, south to Georgia

and west to Arkansas. Found throughout Indiana. It is essentially a tree

of low ground, but it is sometimes found near the base of slopes, and in

the knob area it is sometimes found on the crest of ridges. In all parts

of Indiana except the southwestern part it is found only locally and

then usually in colonies of a few trees. In Wells County, I know of only

two trees located at the base of a slope bordering a pond in Jackson

Township. In the southwestern part of the State it is frequent to a

common tree in its peculiar habitat. It appears that when drainage

basins decrease in size, and leave sandy river bottoms, and bordering

low sand dunes, that the shingle oak is the first oak to occupy the

area. On the sand ridges it is crowded out by the black, black jack and

post oaks. In the bottoms it is succeeded by pin, Schneck's, Spanish,

swamp white and post oaks. Special notes were made on its distribution

on a trip through Gibson, Pike, Daviess, Greene and Sullivan Counties,

going from Francisco northward through the Patoka bottoms where in many

places it forms pure stands. Usually in situations a little higher than

the pin oak zone. Thence eastward to Winslow and then north to Sandy

Hook in Daviess County, thence north to Washington, Montgomery, Odon,

Newberry, Lyons, Marco and Sullivan. In its habitat all along this route

it was a frequent to a very common tree. A few miles northeast of

Montgomery is a small area which a pioneer informed me was originally a

prairie. Typical prairie plants are yet found along the roadside and

fences in the area. I was informed that the shingle oak was the only

species found on the area, and on the border of the area. It is believed

the mass distribution of the species was in the area indicated by the

preceding route. Both east and west of this area the species becomes

less frequent.

=Remarks.=--Wood similar to red oak, but much inferior. Evidently it is

rather a slow growing tree, but it might find a use as a shade or

ornamental tree in sandy habitats where the pin oak would not thrive. It

is also called black oak, peach oak, jack oak and water oak.

[Illustration: Plate 48.

Trees of Indiana First Revised Edition (Publication No. 13, Department of Conservation, State of Indiana) · 第 96 / 265 题