ON THE PINES OF AUSTRALIA. 145 
On THE PINES or AUSTRALIA, No. I.—CALLITRIS 
GLAUCA, R.Br., ‘‘ WHITE OR CYPRESS PINE.”’ 
By RicHarpD T. BAKER, F.L.S., Curator and Government 
EKconomic Botanist, and HENRY G. SMITH, F.C.S., 
Assistant Curator and Economic Chemist, 
Technological Museum, Sydney. 
[With Plates XV. - XXIX.|] 
[Read before the Royal Society of N. 8. Wales, August 5, 1908. ] 
Introduction.—_The White or Cypress Pine, C. glauca, 
R.Br. has been taken first in this series of papers on Aus- 
tralian Pines, as it has the greatest geographical range on 
this island continent, of all the species of that most 
widely distributed genus Callitris, and it may therefore be 
regarded as the most representative of the group. Much 
attention was given to the question of the continental 
range of this genus in order to see if it extended beyond 
Australia, but the results proved, however, that it was quite 
endemic, and that such genera as Tetraclinis and Widdring- 
tonia, of North and South Africa respectively, are quite 
distinct from it, vide Gen. Pl. andalso Masters, Proc. Linn. 
Soc. London, vol. xxx, No. 205, p. 14 seq. vol. xxxvii, No. 
260, p. 332. In the Flora Australiensis, Bentham synony- 
mises C. glauca, R.Br. with C. robusta, R.Br. Its restor- 
ation here to specific distinction is the result of (1) an 
exhaustive examination of the Callitris material contained 
in the principal herbaria of Hurope (infra) and (2) field 
investigation in Australia. In order therefore to definitely 
fix the species upon which this research has been made, a 
description of it accompanies these results. 
J—Aug. 5, 1908. 
