At first sight a very great similarity will be recognised 
between this and Caraserum luridum, Lindl. and Bot. Mag., 
t. 3590. It is possible it may be a variety; at the same 
time, the greater depression of the whole perianth, and the 
different form of the lip are very obvious peculiarities, 
and such as I think will entitle this to rank as a species. 
In C. luridum the two side lobes of the lip run down 
gradually into the apex or middle lobe, which is also con- 
siderably prolonged and reflexed. In our plant the side 
lobes are very distinct and abrupt, presenting a vertical 
edge towards the middle lobe or apex, which is, moreover, 
very short. In other respects the description of one will 
serve for that of the other. 
Fig. 1. Section of the Labellum, exhibiting the abrupt edge of one of 
the side Lobes and the shortness of the middle Lobe, together with the 
Column and Anther-case:—slightly magnified, 
