LXXVII. CONI/FERZ: THU‘JA. 1069 
Variety, 
£ T. 0. 2 variegdta Marsh. p 243. T. vu. foliis variegitis Lodd. Cat. 
1836.—Leaves variegated. 
The frondose-like foliage is numerously ramified, and flattened, or spread 
out laterally. The leaves are small, opposite, imbricated scales: when bruised, 
they diffuse a strong aromatic odour. The sexes are separate upon the same 
tree. The male catkins are in the form of small cones, which, when ripe, are 
yellowish, about 4 lines in length, and composed of oblong scales, which open 
throughout their whole length for the escape of several minute seeds, each of 
1991. TJ. occidentalis. 
which is surmounted by a short wing. Compared with the Oriental, or Chinese, 
arbor vite, the American species is a loose irregular-headed tree, with the 
branches much more horizontal than in that species. The rate of growth, in 
the climate of London, is from 6in. to 1ft. in a year. In ten years, in fa- 
vourable soils, it will attain the height of 10 or 12 feet ; and in 30 or 40 years, 
in moist sheltered situations, drawn up by other trees, it will attain the height 
of 30 or 40 feet. The most common use of this tree in America is for rural 
fences, for which it is highly esteemed. The posts last 35 or 40 years, and 
the rails 60 years ; or three or four times as long as those of any other species. 
The posts remain undecayed twice as long in argillaceous as in sandy soils. 
In Britain, the American arbor vite can only be considered as an ornamental 
shrub or low tree ; thriving well in any soil, even in the most exposed situa- 
tions, but attaining its largest size in low, sheltered, and moist places. It 
grows much faster than the oriental arbor vite, bears the knife and the shears, 
and is frequently employed to form hedges for shelter in gardens and nursery 
grounds. Readily propagated by seeds, which are procured in abundance from 
America or gathered from British trees, or by cuttings. 
2 # 2, T.(o.) ptica‘ta Donn. The plicate, or Nee’s, Arbor Vite. 
Identification. Donn Hort. Cantab., 6. p. 249. ; Lamb. Pin., ed. 2., 2. No. 61. 
Engraving. Our fig. 2108.in p. 1110. 
Spec. Char, &c. Branchlets compressed, spreading. Leaves rhomboid-ovate, 
acute, adpressed, imbricated in 4 rows, naked, tubercled in the middle. 
Cones oblong, nodding. Seeds obcordate, (Lamb. Pin.) A tree resembling 
the preceding species, but smaller. Mexico, and the western shores of 
