Mr. Bentuam’s Account of two new Genera allied to Olacineæ. — 673 
The calyx at the time of flowering is very small, cupuliform, with the mar- 
gin entire, or bearing as many minute teeth as there are petals. It is quite 
free in Ximenia, Heisteria, Gomphandra, Icacina, Apodytes, Leretia and Pogo- 
petalum, very slightly adherent to the ovary in the East Indian and Australian 
species of Olax, and decidedly adherent, with a very short, free and entire 
margin in the American species of Olax and in Schepfia. In Opilia and 
Cansjera it is little more than a dilatation of the torus with four or five 
scarcely perceptible teeth, so that these genera appear at first sight mono- 
chlamydeous. As the fruit ripens the calyx of Olax enlarges and incloses the 
drupe nearly to the top, but without adhering to it. In Schapfia it enlarges 
in the same manner, but adheres closely to the fruit, as in Symplocos. In 
Heisteria it becomes also much enlarged, but is spread out under the fruit 
without inclosing it. In Ximenia, Opilia, Gomphandra, Apodytes, Icacina, 
Leretia and Pogopetalum it persists, but does not increase in size. 
The corolla, hypogynous where the calyx is entirely free, more or less 
perigynous according to the degree of adherence of the calyx, consists of 
four, five or six petals, always valvate in their æstivation, usually of a thick- 
ish consistence, and more or less cucullate at the apex, where they usually 
terminate in an inflexed point. They cohere together in the form of a 
monopetalous corolla above the middle in Schepfia and Cansjera ; they are 
joined in pairs in Olax, and often cohere slightly at the base in the other 
genera, but usually are entirely detached from each other when the flower is 
fully open. 
The stamens, inserted with the petals, are free, or more or less connected 
with the latter; their number is definite, and never exceeds double that of the 
petals. When this number is complete they are placed in two series, the inner 
one opposite the petals, the outer one alternating with them. In Ximenia 
and Heisteria both series are complete and fertile. In Gomphandra, Icacina, 
Apodytes, Leretia and Pogopetalum the outer series are alone complete and 
fertile, the inner one being wanting. In Olax the outer series are complete, 
but reduced to three (or sometimes four?), the inner series reduced to simple 
or bifid filaments. In Opilia and Cansjera the outer series are reduced to 
scale-like processes, whilst the inner are complete and fertile. In Schæpfia 
the inner series are also complete and fertile, but the outer ones are totally 
