THUJA OCCIDENTALIS Linnæus. Arbor-Vitæ. (× 1/2.).]

=Distribution.=--Nova Scotia south to Florida, west to Texas and north

to South Dakota. It is found in all parts of Indiana, although sparingly

in the northern part, especially where streams with bluffs are absent.

No doubt this species in the original forests was confined principally

to the bluffs of streams and rocky ravines. Since the forests have been

cut, it is now found growing along fences, in open dry woods, and in

southern Indiana it is a common tree in old abandoned fields, and in

waste places.

=Remarks.=--Red cedar has had many uses, and the large trees have been

practically all harvested. It is now used principally for poles, posts,

crossties, cigar boxes and lead pencils. It is the best wood known for

lead pencils. The odor is so objectionable to insects that a market has

been made for chests of this wood in which to store clothing and furs.

=SALICÀCEAE.=[10] The Willow Family.

Trees or shrubs with bitter bark; simple alternate leaves; flowers in

catkins, which fall off as a whole, the staminate after flowering, the

pistillate after ripening and scattering of the seeds, the staminate and

pistillate on different plants (dioecious); flower scales single, below

each flower; fruit a lanceolate or ovate-lanceolate capsule opening

lengthwise into 2 recurving carpels or valves; seeds numerous, minute,

oblong, bearing a tuft of hairs at the base. Genera 2, _Salix_, the

willows, and _Populus_, the aspens and poplars, or cottonwoods,

separated by the following characters, those applying only to Indiana

trees species in parentheses:

Buds covered by a single scale; (leaf-blades mostly

enlongated, more than twice as long as wide); flower

scales entire or rarely shallowly toothed at apex;

stamens mostly 2 or 3-8 or 10 1 Salix.

Buds covered by numerous scales; (leaf-blades mostly

cordate-ovate, less than twice as long as broad);

flower scales deeply cut or lacerate; stamens more

than 10 2 Populus.

[Illustration: Plate 9.

Trees of Indiana First Revised Edition (Publication No. 13, Department of Conservation, State of Indiana) · 第 44 / 265 题