1072 



ARBORETUM ET FRUTICETUM BRITANNICUM. 



GENUS IX. 



CA'LLITRIS Vent. THE CALLITRIS. Lin. Syst. Monoe^cia Monadelphia. 



Identification. Vent. Dec. Nov. Gen. ; R. Brown in Litt. ; Richd. Mem. sur les Conifcres, p. 141. 

 Synonymes. Ttiuja, part of, Lin. ; FresnSh'a Mirbel Mem 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 Cupressus or Thuja. 



This genus was established from the Thuja 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. 



1 1. C. QUADRIVA'LVIS Vent. The four-valved Callitris. 



Identification. Ventenat, Dec. Nov. Gen. ; Rich. Mem. sur les ConifeTes, p. 46. 



Synonymes. Thuja articulata Desf. Atl. 2. p. 353., Arb. et Arbriss. 2. p. 576. ; Cupressus articulata 



Pin. Wob. p. 191. 

 Engravings. N. Du Ham., 3. t. 5. ; 



Lodd. Bot Cab., t. 844. ; and our 

 fig. 1995. from specimens received 



from M. Otto of Berlin. 



Spec. Char., fyc. 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. Barbarv. 

 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 



Wa ll- 1995. 0. quadriv&lvis. 



1 C. FothergUli. ? Cupressus Fothergfllz. 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. 



1 C.triquetra. Cupressus 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. 



C. cupressiformis Vent., Loud. Hort. Brit. p. 490. A native of New 

 Holland, introduced in 1826. There are small plants of it in various nur- 

 series. 



1 C. macrostdchya Hort. There is a plant at Elvaston Castle. 



