.566 
APPENDIX. [ Botany of Terra Australis 
as the tropic. Prostanthera is remarkable io the appendages to its anther®, 
in the texture of its fruit, and in the remains of Albumen existing in the 
ripe seeds of several of its species. Westringia , and its related genera 
Microcorys and Hemigenia, differ from the rest of the order in having ver- 
ticillate leaves, and from the greater part in the structure of anther®, 
particularly in the order in which these organs become abortive. Wes- 
tringia, according to Dr. Smith, has resupinate corolla, a term which in 
this case cannot allude to a mere inversion in the form of its lips, for this 
does not exist ; and if it mean an absolute change in the relation of its 
parts to those of the calyx or to the included organs, it cannot, I apprehend, 
be admitted either in this genus or in any other of the order. I he fact 
which I formerly stated* against the resupination of corolla in Labiat® is 
the uniformity of its ®stivation in this order, in which the upper lip 
always covers the lower. To those who do not consider this as a sufficient 
proof, the following, drawn from another equally uniform point of struc- 
true, may perhaps appear more satisfactory. In Labiat®, as well as in 
several other orders with irregular (lowers, the deviation from the usual 
quinary division of calyx and corolla in Dicotyledones, does not consist in 
an absolute suppression of parts, but merely in their confluence ; a fact in- 
dicated by the disposition of vessels; thus, the upper lip of the corolla, 
wlpch in this order generally consists of one piece, either entire, or more or 
less deeply bifid, is always furnished with two longitudinal nerves equidis- 
tant from its axis, which is without vessels ; while each of the three lacini® 
usually forming the lower lip, has a single nerve passing through its axis ; 
the upper lip is therefore to be considered even when entire, as made up 
of two confluent lacini® : and if this test be allowed to be conclusive, and 
applied to the corolla of those genera of Labiat® in which it is supposed to 
be resupinate, the opinion will be found to be erroneous. 
MYOPOEJN/E.f The principal characters in the fructification of 
this order, by which it is distinguished from Verbenace®, are the presence 
of Albumen in the ripe seed, and the direction of the Embryo, whose radi- 
cule always points towards the apex of the fruit. The first of these cha- 
racters, however, is not absolute, and neither of them can be ascertained 
+ Prodr. Jl. nov. holL 514 . 
* Prodr. Jl. nov. holl. 499 . 
