142 ON THE HUON PINE &c. 
another Pachylepis from South Africa certainly distinct from | 
P. cupressoides, which may however be the C. stricta. 
VII. Cauurrris, Vent. Of this genus there are probably 
at least twelve or fifteen individuals in Australia. The 
North African C. quadrivalvis, is still retained in Callitris 
by M. Brongniart, who removes the S. African species to 
Pachylepis. I am, however, inclined to think that the forms — 
from these three widely separated localities will eventually s 
prove to belong to one and the same genus. Spach more. 
recently breaks up Callitris into three genera, confining that 
name to the original N. African plant, and applying Mirbel's - 
name of Frenela to the Australian species. 
VIII. Arruroraxis, Don. Founded on two Tas- 
manian plants, 1. A. selaginoides, and 2. A. cupressoides ; t0 
these another has been added, 3. A. laxifolia, Hook. (Ie 
Plant. t. 573). 
IX. Micnocacnnys, Hook. fil. vid. infra, comprising 4 : 
single species, discovered by Mr, Gunn in the interior 
Tasmania. 
X. Popocarrus, L’Hér. The most extensive of all the 
southern genera of Conifere, upon which Mr. Bennett has 
published an excellent dissertation.* There are three species 
from Australia, 1. P. elata, Br. 2. P. spinulosa, Br. 3. P. ensi 
folia, Br. ;—and two from Tasmania, 4. P. alpina, Br., 5. 
Lawrencii (vid. infra). Six inhabit the New Zealand Islands 
6. P. spicata, the Mai or Matai. 7. P. ferruginea, Don, the 
Miro or Maira. 8. P. Totarra, Don, the Totarra. 9. P. da- 
crydioides, A. Rich., the most abundant of the New 
species in the — of the Bay of Islands, * Kai 
katia” of the natives. 10. P.? biformis, Hook. 11. P. ni- 
valis, Hook. (Ic. Plant. t. 582), this is possibly a variety or 
alpine state of the P. Totarra. In Chili there are also sever? 
species, perhaps not less than three: 12. P. Chilina, Rich. 
this, and two others, are in the Hookerian Herbarium. 
T 
* Plante Javanicæ rariores, p. 40. 
