1072 ARBORETUM ET FRUTICETUM BRITANNICUM. 
Genus IX. 
sla 
CA’LLITRIS Vent. Tat Catiitris. Lin. Syst. Monce‘cia Monadélphia. 
Identification. Vent. Dec. Nov. Gen.; R. Brown in Litt. ; Richd. Méin, sur les Coniféres, p. 141. 
Synonymes. Thija, part of, Lin. ; Fresnélia Mirbel Mém Mus. 
Gen. Char. Male flowers in terminal solitary catkins. Pollen of each flower 
contained in 2—5 cases, attached to the lower part of the scale, which is 
peltate. — Female flowers in terminal catkins, of 4—6 ovaries ; or else re- 
ceptacles, each spreading at the tip, and disposed upon so short an axis as 
to seem, in the state of fruit, the valves of a regular pericarp, at which time 
each has a mucro near the tip. Ovules 3 or many to each ovary, or re- 
ceptacle, Seed winged. (G. Don.) 
Leaves simple, opposite or whorled, exstipulate, evergreen ; linear, scale- 
shaped, situated under the joints of the branches. Flowers yellowish. 
—Trees evergreen, low, or shrubs, with jointed branches ; natives of Africa, 
with the habit of Cupréssus or Thuja. 
This genus was established from the Thija articulata of Desfontaines. It 
differs from the genus Thuja in having the scales of the female catkins con- 
stantly from 4 to 6, all opening like the valves of a regular pericarp ; and in 
having, at the base of each of these scales, a number of seeds, winged on the 
margin, whereas in Thuja they are wanting, or inconspicuous. 
2 1, C. quapriva’tvis Vent. The four-valved Callitris. 
Identification. Ventenat, Dec. Nov. Gen.; Rich. Mém. sur les Coniféres, p. 46. 
Synonymes. Thija articulata Desf. Add. 2. p. 353., Arb. et Arbriss. 2. p. 576. ; Cupréssus articulata 
Pin. Wob. p. 191. 
Engravings. N. Du Ham., 3. t. 5.3 
Lodd. Bot Cab., t. 844.; and our 
Jig. 1995. from specimens received 
from M. Otto of Berlin. 
Spec. Char., &c. Leaves flat- 
tened, articulate. Female 
catkin tetragonal, with 4 
oval valves, each furnished ¢ 
with a point, and 2 of which 
bear seeds. (Desf.) A low 
evergreen tree. Barbary. 
Height 15 ft. to 20 ft. In- 
troduced in 1815, and flow- 
ering from February to 
May. 
Rather tender in the open 
air in the climate of London, 
but may..be kept against a 
wall. 
1995. C. quadrivalvis. 
2 C. Fothergilli. ? Cupréssus Fothergflli—There are young plants of this 
name at Elvaston Castle, and in some of the nurseries, which in general ap- 
pearance resemble the common evergreen cypress. 
2 C. triquetra. Cupréssus triquetra Lodd. Cat. ed. 1836.—A native of the 
Cape of Good Hope, introduced in 1820. There are plants at Messrs. 
Loddiges’s, and also at Elvaston Castle, where it has stood out three years, 
and appears quite hardy. 
2 C. cupressiformis Vent., Loud. Hort. Brit. p. 490.— A native of New 
Holland, mtroduced in 1826. There are small plants of it in various nur- 
series. ; 
2 C. macrostachya Hort.—There is a plant at Elvaston Castle. 
