DESCRIPTION OF THE PLATES. 
moved, nat. size. Fig. 6, the pistil. Fig. 7, longitudinal section of the same, showing 
it to he unilocular, with a basal free central placenta, to which are attached its three series 
of ovules and the rudimentary dissepiments ; the summit of the covering of the ceU is much 
thickened and depressed, bearing some resemblance to an epigynous disk. Fig. 8, a trans- 
verse section, showing the same parts : all magnified. 
D. Details of Ctrta agkestis. 
Fig. 1, a flower. Fig. 2, the coroUa cut open, showing the stamens attached to the 
otherwise free petals : both nat. size. Fig. 3, a stamen, seen in front, magnified. Fig. 4, 
the calyx, nat. size. Fig. 5, longitudinal section of calyx and ovary, magnified. 
E. Details of Cvrta dealbata. 
Fig. 1, a flower in hud. Fig. 2, the same expanded. Fig. 3, the pistil : all nat. size. 
Fig. 4, the four petals. Fig. 5, diagram showing their valvate mode of aestivation. Fig. 6, 
the eight stamens : all magnified. Fig. 7, four of the stamens, showing attachment of the 
base of the filaments, and the two distinct cells of each anther separated by an interval 
and dorsaUy attached by their entire length upon the broad filament. Fig. 8, a stamen, 
seen sideways : all more magnified. Fig. 9, the ovary, with half of the calyx removed. 
Fig. 10, longitudinal section of the unilocular ovary, showing the central basal placenta, 
ovules in three series, and the rudimentary dissepiments : both magnified. 
F. Details of Ctrta sttberifoua. 
Fig. 1, a flower in bud, nat. size. Fig. 2, diagram showing the valvate mode of aesti- 
vation of the petals. Fig. 3, the coroUa cut open, showing the position of the stamens. 
Fig. 4, the pistil, with half of the calyx removed : both nat. size. Fig. 5, the stigma and 
portion of the style. Fig. 6, a stamen seen before and behind, showing the entire attach- 
ment of the two distinct anther-cells : both magnified. Fig. 7, a fruit. Fig. 8, the same, 
showing the valvular dehiscence of its pericai-p, which is unilocular and monospermous. 
Fig. 9, the seed removed. Fig. 10, the same, with the outer integument removed, showing 
the apical chalaza. Fig. 11, a longitudinal section of the albumen, showing the embryo 
enclosed in it. Fig. 12, the embryo removed, seen sideways: all nat. size. 
G. Details of Pamphilia stteacifolia. 
Fig. 1, a male flower, nat. size. Fig. 2, corolla of a male flower cut open, showing the 
position of the stamens, free nearly to the base, magnified. Fig. 3, a female flower, nat. size. 
Fig. 4, the same, magnified. Fig. 5, corolla of the same, in the act of bursting open. Fig. 6, 
diagram of the coroUa in bud, showing its valvate mode of aestivation. Fig. 7, coroUa of 
the same, cut open, showing the position of the stamens. Fig. 8, portion of the same, more 
magnified, showing four of the stamens and a petal ; the fllaments are much broader than 
the two cells of each anther, which are separated by a wide interval, and dorsaUy attached 
by their whole length to the fllament ; the filaments are imited in a monadelphous tube up 
to the level of the anthers, which is free from the petals, which again are ^so free from 
one another, except at the very base, where a short portion of the staminal tube holds 
them together slightly. Fig. 9, transverse section of a stamen, across the anther, showing 
the attachment of its two separate ceUs upon the much broader filament, and the Une of 
their dehiscence in front. Fig. 10, a longitudinal section of the unUocular ovary, showing 
the position of its three erect ovules, on a depressed central placenta, the ovules standing 
b 2 
