CONTRIBUTIONS TO BOTANY. 
mauling hinged at its base opens from top to bottom, and thus 
all become alike permanently reflected. The pollen is composed 
of white farinaceous granules, somewhat aggregated, and inclosed 
in the inner imbedded valves of the anther-cells ; examined under 
a microscope every granule is singularly cruciform, each arm 
being terminated by a small rounded extremity, with a similar 
globular elevation in the centre. Four small, fleshy, very distinct 
and free hypogynous scales invest the base of the staminal tube, 
and intervene between it and the petals, with which they alter- 
nate ; they have a rounded and subemarginated summit, are 
striately grooved and marked on both sides with lines of inter- 
mingling red spots. The ovarium is oblong, seated on a short 
stipitate support, is somewhat conical and compressed, with a 
groove along each flattened side, the style being continuous with 
its apex, and surmounted by a compressed, obtuse, oblong stigma, 
which is closely invested by the globular connective, so that it is 
difficult to extract it without breaking the style. The ovarium is 
unilocular at its summit and bilocular at the base, the incom- 
plete dissepiment corresponding with the grooves ; a single ovule 
is suspended in each cell from the summit of the flattened axile 
placenta, which is an extension of the haK-dissepiment, and each 
ovule appears enveloped by a distinct membrane, which is marked 
on its dorsal face below the middle with short parallel lines of 
reddish dots ; the lower part of the style, for the third of its 
length, is hollow, this vacuity being an extension of the unilo- 
cular space in the summit of the ovarium, showing distinctly that 
there exists no direct communication between the placenta and 
the style. The fruit is yet unknown, but the calyx evidently 
enlarges considerably, and the pedicel lengthens with the growth 
of the ovarium, as in Heisteria. These characters, of which the 
following is a ^agnosis, evidently belong to no known genus : I 
therefore propose for it the name of Aptandra, from airro), necto, 
and avr)p, mas, on account of the very curious union of the 
stamens into a single organ. 
Aptandra (gen. nov.). — brevissimus, patelliformis, 4-sul- 
catus,4-dentatus,carnosus,fructu augescens. Pefa/fl 4, sequalia, 
calycis lobis alterna, carnosula, lineari-lingulseformia, summo 
latiori concava, apiculo inflexo, sestivatione valvata, demum spi- 
ral iter reflexa. Squamrs petaloidea 4, liberse, crassse, rotun- 
datae, petalis alternse, inter eadem et tubum staminalem sitae. 
Stamen integrum (forsan e quatuor staminibus coalitis, petalis 
exterioribus oppositis compositum), cylindi-aceum, longitudine 
corollae, tubo tereti, carnoso, pistillum presse cingente; anther ce 
ex loculis 8, oblongis, aequalibus, arete in annulum extrorsim 
dispositis et in connectivum fere globularem crasso-carnosum. 
