148 — ON THE HUON PINE, &c. 
Mr. Gunn says this species forms a small tree, 6-10 feet 
high, called the ‘ Native Cypress." It is very distinct from 
the former, especially in its ovate, generally larger, but very - 
variable cones, and the harder, narrower, and unwinged 
seeds. 
2. ARTHROTAXIS, Don. 
Mr. Don's excellent description of this genus is published 
in the 18th volume of the Linnean Society's Transactions ; 
the character is not, however, complete, owing to the ab- 
sence of perfect specimens. The embryo, which was want- 
ing, I have found to be inclosed in a rather thin coat 0! 
albumen; it is stout and cylindrical, occupying nearly tht 
whole length of the seed, and furnished with two cotyledons, 
which Mr. Don rightly presumed it would possess. ‘The À: 
laxifolia, Hook., is the only other known species, A. tetragona 
proving, on examination of its fruit, to belong to a different 
and new genus, Microcachrys (nobis). The pollen of Art 
taxis is, like that of Callitris, formed of transparent sph 
generally, if not invariably depressed, with a central, m 
opaque nucleus; in the young plant it is larger, m 
more depressed, and hence discoid. 
1. A. selaginoides, Don, in Linn. Trans. v. 18, p. 172, t.1 
Hook. Icones Plant. t. 574. : 
Has. Tasmania, Falls of the Meander River, Gunn, n 
The seeds represented in the * Icones Plantarum" probat 
belong to the following species, in this that organ is n 
orbicular, deeply notched at the apex and basé, the 
broad and membranous. 
2. A. cupressoides, Don, l.c. p. 173, E 18, fig- 23 Hook. 1 
t. 5595 - 
Has. Tasmania, Pine River, Lake St. Clair, Gunn, n. 365 
The seed of this species is smaller than that of th 
broadly ovate, or somewhat deltoid, with thick spongy | sf 
formed of two membranes inclosing the seed in their cer 
the latter is also smaller than, but quite similar to, that: 
selaginoides. The only native living specimen of this 
