i6 



The female amentum consists of six or eight sporophylls arranged in two 

 whorls, with several orthotropous o\iiles arranged in three or more \'ertical rows 

 on the upper surface at the base of the sporophjll. 



Bracts are quite absent. 



The fruiting cone varies in size according to the species, the prevailing 

 forms being globular, then o\oid or pyramidal ; valves are united at the base 

 in the same plane mto a single whorl, the alternate ones are mostly smaller, 

 valvate, rarel}- overlapping, dehiscent, and pointed at the apex, just below which 

 is a dorsal point, more or less developed in each species. 



The seeds are fairly numerous in each cone, numbering from 25 to 40. Their 

 disposition in the sporophvll has already- been given. Both fertile and sterile seeds 

 have either two or three wings, and it is not easy to differentiate, morphologically, 

 one from the other. The hard integument so protects the cotyledons that it 

 requires at least many months before they germinate in the soil. 



The genus has a geographical range extending throughout Australia and 

 Tasmania, the most wideh' distributed of the genus being the White or Cypress 

 Pine, C. glaiica, R.Br., and the Black or Cypress Pine, C. calcarata, R.Br. 

 Commerciall}', therefore, these are the best-known trees, the former taking 

 pride of place as regards its timber, and the latter for its valuable bark. Other 

 data of a scientific and economic nature are given under the respective species. 



Bentham in the " Flora Australiensis " reduces the number of species to 

 nine for the whole of Australia and Tasmania, whilst Baron von Mueller in his 

 second " Census," by restoring C. verrucosa and C. columellaris to specific rank 

 and synonymising the two species of Actinostrohus under this genus, enumerates 

 twelve species. 



As the result of this investigation we find the genus divides itself into 

 eighteen species, i.e. : — 



1. C. robusta, R.Br. 



2. C. tuberculata, R.Br. 



3. C. verrucosa, R.Br. 



4. C. propinqua, R.Br. 



5. C. glauca, R.Br. 



6. C. arenosa, A. Cunn. 



7. C. intratropica, Benth. et Hook. f. 



8. C. gracilis, R. T. Baker, 

 g. C. calcarata, R.Br. 



10. C. rhomboidea, R.Br. 



