rows on the 2-edged branchlets, having a strong aromatic odor when
bruised. Cones oblong, 1/3 in. long, with few (6 to 10) pointless
scales. A small tree, 20 to 50 ft. high, or in cultivation 1 to 50 ft.
high, with pale, shreddy bark, and light, soft, but very durable wood.
Wild north, and extensively cultivated throughout under more than a
score of named varieties. Their names--_alba_, _aurea_, _glauca_,
_conica_, _globosa_, _pyramidalis_, _pendula_, etc.--will give some idea
of the variations in color, form, etc.

[Illustration: T. gigantea.]

2. =Thuya gigantea=, Nutt. (GIANT ARBOR-VITAE.) Leaves scale-shaped,
somewhat 4-sided, closely overlapping, sharp-pointed, slightly
tuberculate on the back; cones more or less clustered and nearly 1/2 in.
long. A very large and graceful tree, 200 ft. high, with white, soft
wood; from the Pacific coast; introduced but not very successfully grown
in the Atlantic States.

[Illustration: T. dolabrata.]

3. =Thuya dolabrata=, L. (HATCHET-LEAVED ARBOR-VITAE.) Leaves large,
sometimes 1/4 in. long, very blunt, in 4 rows on the flattened spray.
Cones quite small, ovate, sessile, with jagged edges; scales reflexed
and wedge-form. A small conical tree with horizontal branches and
drooping branchlets; which, because of its large leaves (for an
Arbor-vitae) and flexible branchlets, is quite unique and interesting. In
shaded and moist places it has done quite well as far north as New York.

[Illustration: T. orientalis.]

4. =Thuya orientalis=, L. (EASTERN OR CHINESE ARBOR-VITAE.) Leaves small,
in 4 opposite rows, appressed, acute, on the numerous 2-edged
branchlets. Cones large, roundish, with thick leathery scales having
recurving, horn-like tips. Of this species there are as many varieties
sold as of number one, and nearly the same varietal names are used; but
it is not so good a species for general cultivation in this country.

Var. _flagelliformis_, Jacq. (Weeping Arbor-vitae), has very slender,
elongated, weeping branches, curving gracefully to the ground. It is a
beautiful variety, often cultivated (a single stem is shown in the
figure).

GENUS =104. CHAMAECYPARIS.= (THE CYPRESSES.)

Strong-scented, evergreen trees with very small, scale-like or somewhat
awl-shaped, closely appressed (except in some cultivated varieties),
overlapping leaves and 2-ranked branchlets, almost as in Thuya. Cones
globular, with peltate, valvate scales, firmly closed till ripe; the
scales thick