568 
APPENDIX. [ Botany of Terra Australis. 
directions : but while no genus has been met with within the tropic which 
does not also exist in the principal parallel, unless that section of Orevillea 
having a woody capsule* be considered as such, several genera occur at 
the South end of Van Diemen’s Island which appear to be peculiar to it. 
No Australian species of the order has been observed in any other 
part of the world, and even all its genera are confined to it, with the ex- 
ception of Lornatia, of which several species have been found in South Ame- 
rica ; and of Stenocarpus, the original species of which is a native ot New 
Caledonia. 
The genera of Terra Australis that approach most nearly to the South 
African portion of the ProteaCese exist in the principal parallel, and 
chiefly at its western extremity : those allied to the American part of the 
order are found either at the eastern extremity of the same parallel, or in 
Van Diemen’s Island. 
There is no species of Proteaceae common to the east and west coasts 
of New Holland, and certain genera abound at one extremity of the prin- 
cipal parallel which at the opposite extremity are either comparatively rare 
or entirely wanting. 
I have formerly remarked that in this order no instance of deviation 
from the quaternary division of the perianthium has been observed , a 
fact which is the mote remarkable as this is itself a deviation from the 
prevailing quinary number in the floral envelopes of Dicotyledonous 
plants. 
There is a peculiarity in the structure ofthe stamina of certain genera 
of Protuacece namely, Simsia, Conospermum, and Synaphea, in all of which 
these organs are connected in such a manner that the cohering lobes of two 
different antherse form only one cell. 
Another anomaly equally remarkable, exists in Synaphea, the divi- 
sions of whose barren filament so intimately cohere with the stigma as to 
be absolutely lost in its substance, while the style and undivided part of 
the filament remain perfectly distinct. 
SANTALACEiE. I have formerly + proposed, and attempted to 
* Cycleptera, Lin. soc. transact . IQ.p. I ‘JG. prodr. Jl. nov. holt. 380. 
f Prodr. Jl. nov. holt. 350. 
