Natural Orders.'] 
APPENDIX. 
559 
the primary branches ; but in other cases where they are equally distinct at 
the base of the tube, this supposition cannot be admitted. A monopetalous 
corolla not splitting’ at the base is necessarily connected with this struc- 
ture, which seems also peculiarly well adapted to the dense inllorescence 
of Composite; the vessels of the corolla and stamina being united, and so 
disposed as to be least liable to suffer by pressure. 
As this disposition of vessels is found in Ambrosia and Xanthium 
they ought not to be separated from Composite as Richard* has proposed ; 
and as it does not exist in Brunonia I prefer annexing that genus to Good- 
enoviffi, with which it agrees in the peculiar indusium of the Stigma. 
GOODENOVLE.+ 1 his order I have formerly separated from 
Campanulacese, considering the peculiar membranous cup -surrounding 
the stigma, along with a certain irregularity in the corolla, as sufficient dis- 
tinguishing characters, especially as these are accompanied by other differ- 
ences which appear tome important. In Goodenoviae f have not included 
Lobelia, which, however, has also an irregular corolla, and although it 
wants the peculiar indusium of the stigma, has in its place a fasciculus or 
pencil of hairs surrounding that organ. This structure has been regarded 
by Jussieu and Richard, in a very leared memoir, more recently written on 
the subject, X analogous to the indusium of Goodenoviae, to winch they have 
therefore added Lobelia and derived the name of the order from this, its 
most extensive and best known genus. To the opinion of these authors I 
hesitate to accede, chiefly for the following reasons : 
1st. In Goodenoviae the deeper fissure of the tube of the corolla 
exists on its inner or upper side, a circumstance readily determined in those 
species having simple spikes. In Lobelia, on the other hand, the corres- 
ponding fissure is on the outer or lower side, a fact, however, which can 
only be ascertained before the opening of the corolla, the flowers in the 
greater number of species becoming resupinate in the expanded state, a 
circumstance that does not appear lo have been before remarked. The re- 
lation therefore not only of the corolla but of the calyx and stamina to the 
axis of inflorescence, is different in these two tribes. 
* Annates du mus. 8,p. 184. f Prodr. Ji. nov • holt. 573. 
I Annates dumus. 18- p. 1. 
