TSUGA CANADENSIS (Linnæus) Carrière. Hemlock. (×1/2.)]

=4. TAXÒDIUM.= The Bald Cypress.

=Taxodium dístichum= (Linnæus) L. C. Richard. Cypress. Plate 7. Large

tall straight trees, up to 18 dm. in diameter and 45 m. high, usually

with a buttressed base which is frequently hollow. In wet situations it

develops steeple-shaped projections from the roots to above the water

level, known as "knees"; bark gray or reddish-brown, separating from the

trunk in long thin narrow strips; shoots light green, smooth, turning

reddish-brown the first year, then a darker brown; leaves spirally

arranged, appearing as if 2-ranked on vegetative shoots, linear, 5-15

mm. long, sessile, acute, yellowish-green, turning brown in the fall and

dropping off; staminate flowers numerous, borne on long terminal

panicles, pistillate flowers solitary in the axils of the leaves; fruit

a cone, globose, about 2.5 cm. in diameter, the surface with some

wrinkles made by the edges of the closely fitting scales; wood light,

soft and straight-grained, rather weak, does not warp or shrink much and

reputed to be very durable when exposed to soil or weather.

=Distribution.=--Along the Atlantic coast from Delaware to Florida and

along the Gulf west to Texas and north along the Mississippi Valley to

Indiana. In Indiana it has a peculiar and limited distribution. The mass

distribution was just north and west of Decker in Knox County.

Collett[6] estimates that 20,000 acres were "covered with a fine forest

of cypress". Wright[7] maps the other places in the southern part of

Knox County where the cypress was known to have occurred. At present the

only cypress in Knox County is in the extreme southwest part of the

county, and is known as Little Cypress swamp. Here it is associated with

such trees as white elm and Schneck's oak. It is believed that it

extended only a few miles north of the Deshee River. Going southward it

has not been seen in Gibson County, and is first noted in Posey County

along the Wabash River in a cypress pond about 12 miles southwest of Mt.

Vernon. Then again in Posey County along the Ohio River on the shores of

Hovey Lake, and in a slough about 3 miles east of Mt. Vernon. It

occurred in a few spots in Vanderburg County along the Ohio River

southwest of Evansville. It again appears in limited numbers along

Cypress Creek a few miles east of Newburg in Warrick County, which is

its eastern[8] known limit.

The cypress in all of its stations is found only in places that are for

the greater part of the year under water.

=Remarks.=--The original stand of cypress in Indiana has practically all

been cut, and the swamps drained and now under cultivation. In the

slough east of Mt. Vernon for several years, thousands of seedlings of

the year have been noted, but for some reason they do not survive a

second year. The present indications are that the cypress will be

extinct in Indiana before many years because practically no small trees

can be found.

[Illustration: Plate 7.

Trees of Indiana First Revised Edition (Publication No. 13, Department of Conservation, State of Indiana) · 第 42 / 265 题