258 



13. Callitris Roci. 



Endl. Syn., Conif., 36. 



Syn. : — Frenela suhcordata, Parlat. in Enum. Sem. Hort. Flor. 1862, 24, and in 



DC. Prod. XVI, ii, 446. 



Habitat. 

 This species appears to ha\e a rather Hmited range, as the material extant 

 in herbaria is only from King George's Sound and Swan River, W. Australia. 



I. HISTORICAL. 



Several localities are given for this species in the " Flora Australiensis," 

 but we were, unfortunatelv, not able to obtain material for oil distillation. 



The description here given is founded on Baxter and Drummond's specimens 

 at Kew and Melbourne. 



The species is, apparently, very distinct, and presents little difficulty in 

 determination. The coarse, angular, decurrent leaves on the branchlets are more 

 pronounced than in any other species, whilst the globular fruit cones with the 

 angles at the valve junctions are quite unique. 



Herbarium Material Examined. 

 Kew, — 



Baxter's specimen from King George's Sound. 



Drummond's specimens from Swan River. This specimen is labelled 

 F. suhcordata by Parlatore. 



II. SYSTEMATIC. 



A tree or shrub with coarse, flexuose, erect branchlets, stouter than in an\- 

 other species, internodes angular ; free portions of the leaves appressed, obtuse ; 

 the decurrent portion very prominent and producing the pronounced angularit\' 

 formed by the dorsal edge of the leaves; internodes from i\ to 2 lines long. Male 

 amenta unknown ; female amenta not seen. 



Fruit cones on short peduncles, or terminating short branchlets, nearlv 

 globular, truncate or intruded at the base \ to | inch diameter; valves very thick, 

 the three larger having parallel sides, the three smaller being triangular in shape, 

 strictly valvate, the alternately large and small ones forming at their junctions 

 prominent obtuse angles before opening, smooth outside ; the dorsal point \'ery 

 prominent. 



No material was available for botanical or chemical investigations. 



