CONTRIBUTIONS TO BOTANY. 
45 
embryo is thus divided into four equal lobes, greatly flattened, 
foliaceous, and lying in adpressed pairs, free all round their mar- 
gins, but united together at a small point to the very apex of the 
terete accumbent radicle, which is of the length of the lobes, and 
lies recondite in the centre, concealed by the free margins of these 
lobes : this radicle, which points to the basal hilum, is placed trans- 
versely and centrifugally in regard to the axis of the capsule, as 
in most genera of the family. The cavity of the coriaceous in- 
tegument which encloses it is nearly orbicular or transversely oval, 
though sometimes much compressed, without any tendency to the 
formation of a semiseptum at its base, as occurs in many genera. 
The reason of this is that the neck of the intermediate integument 
is not agglutinated to the sides of the outer tunic, but remains 
free ; and in Argylia this neck is extremely elongated, indeed 
longer than the integument itself, so that it is coiled up into a 
shorter space, much in the same way that Dr. Wight represents 
it in Calosanthes (Icon. tab. 1339, upper figure). 
There are some exceptions to the occurrence of this dee]) 
emarginature of the cotyledons, — for instance, in Calampelis, 
where the embryo assumes the ordinary form of two simple co- 
tyledons, nearly orbicular, compressed, and foliaceous, with a 
short, terete terminal radicle, all united together at their slightly 
cordate base. In Oxycladus, and probably also in Monttea and 
Reyesia, the embryo is similarly developed, the cotyledons being 
simple, oval, very thick, and fleshy, with a short terminal radicle. 
In Platycarpum and Henriquezia, the cotyledons are sim})le, 
thick, fleshy, and transversely elongated, with a deep hollow 
upon their inner face, at their true base (or apparent side), in 
which the radicle lies concealed. In Crescentia, Sesamum, Peda- 
lium, and their congeners, the embryo is constructed as in Oxy- 
cladus and Calampelis. In the Crjrtandrace(e the embryo is said 
to be terete, with cotyledons shorter than the radicle. 
In Anemopcegma, however, where the embryo is of the form 
described in Pithecoctenium, we find not only the broad mem- 
branaceous wing, but the coriaceous discoidal portion also, cleft 
at its summit ; so that the tunics become bilobed, and as it were 
2-celled at that extremity, and the apices of the cotyledons 
nestle in these spaces : but although the base of these tunics 
has no such corresponding cleft, we find there a short transverse 
septum, as before explained, connecting the dorsal and ventral 
faces of the integument ; and within the two marsupial pouches 
so formed the lower lobes of the cotyledons are isolated and 
enclosed. 
This structure is carried to the utmost extreme 'm Adenocalynma, 
where the seeds are not highly compressed, as usual, but are 
very thick, nearly circular, with a hard, polished, crustaceous 
