72 MR. BENTHAM'8 SYNOPSIS OF LEGNOTIDES, 
from the American Cassipoureas except in habit and inflorescence, 
in its almost diwcious flowers, and in the rather more dilated 
stigma. Still the habit is so distinct, that it cannot be joined 
with Cassipourea, unless, as before mentioned, the whole six 
genera are united into one. The leaves appear to be deciduous, 
and have none of the coriaceous texture which all other Rhizo- 
phoree acquire, at least when full-grown ; the loose cymes are like 
those of several Lythrariee. The perigynous disk is cupular, 
as in Cassipourea, but much more developed. 
DACTYLOPETALUM. 
This genus is founded on a single specimen gathered on the 
island of Nossi-bé, off the north-west coast of Madagascar, by 
Boivin. With the habit, inflorescence, and most of the characters 
of the American Cassipoureas, I could not include it in that genus 
on account of the structure of the ovary, which has no dissepiments 
and only two pairs of pendulous ovules round the central axis, and 
the stamens are only twice the number of the petals. The fruit 
is unknown. 
CassIPOUREA. 
This genus must remain restricted to the three tropical American 
species enumerated in DeCandolle’s ‘Prodromus.’ Additional 
specimens have proved to me that the C. serrata I described 
among Schomburgk’s plants was founded on a specimen of 
C. macrophylla with remarkably toothed leaves, and the C. quadri- - 
locularis of Spruce's plants belongs also to the same species, which, 
as үе! аз the two others, occurs occasionally with four instead of 
three cells to the ovary. The number of stamens varies in all the 
species, either four times or five times that of the petals; and in 
one specimen only of the C. elliptica, the one figured in Hooker's ` 
‘ Icones,” vol. iii. t. 280, does it appear to be generally (but not 
always ?) three times that of the petals. 
The genus Anisophyllum, Don, or Tetracarpea of Gardner, which 
I had formerly considered rather as an anomalous Rhizophoracea 
than as a Hamamelidea, certainly differs essentially from the former 
in its alternate leaves, its inflorescence, and more divided styles. 
Its immediate affinities must, however, remain uncertain until the 
whole group of small orders clustered round the Saxifragacee 
shall have been more carefully reviewed. 
The following is the more technical synopsis of the genera and 
species — 
