272 DESCRIPTION OF THE PLATES. 
Pate XVI. 
Odontadenia grandiflora, a portion of a plant in flower, from Hayes's specimen. Fig. 1, the lower ven- 
tricose part of the corolla, opened to show the insertion of the stamens included in it. Fig. 2, stamens 
with the anthers cohering in a cone: both natural size. Fig. 3, a stamen, seen in front, the fila- 
ment inserted in a tuft of hairs, much magnified. Fig. 4, the same, on the dorsal side, where it is 
pilose. Fig. 5, the unequal sepals thrown back to show the broad inner scales, the 5-cleft disk, and 
the ovaries. Fig. 6, the two ovaries surrounded by the disk, the style, clavuncle, and stigmata. 
Fig. 7, the follicle, from Smith’s specimen. Fig. 8, a transverse section of the same, to show the mode 
of placentation. Fig. 9, portion of the submembranaceous placenta, seen on the side facing the 
pericarp, studded with the cicatrices on which the seeds are imbricately seated. Fig. 10, one of the 
terete erect seeds. Fig. 11, a longitudinal section of the same seed, showing the anatropous seed 
enclosed in it. Fig. 12, the embryo embedded in albumen. Fig. 13, the embryo extracted, with the 
short basal radicle : all natural size. 
Prats XVII. 
Macrosiphonia prostrata, a plant in flower and in fruit. Fig. 1, the corolla cut open, showing the 
position of the cohering stamens. Fig. 2, a stamen detached: both natural size. Fig. 3, the 
same, seen in front and sideways, magnified. Fig. 4, the calyx, with the lanceolate sepals thrown 
back to show the row of many minute inner scales, the disk of five erect lobes surrounding 
the much longer ovaries, the very elongated slender style, the clavuncle extricated from the cohering 
anthers, and the stigmata. Fig. 5, the two subtorose, suberect follicles. Fig. 6, a seed, seen before r 
and behind. Fig. 7, the nucleus. Fig. 8, the anatropous embryo extracted from the corneous 
albumen of the nucleus: all natural size. 
Prate XVIII. 
Stipecoma pulchra, a portion of the plant, showing its opposite deeply peltate leaves, and its opposite 
axillary panicles on a stout recurved peduncle, charged at its base with large leaf-like bracts, and 
branching above, with somewhat distant branchlets, each with several large foliaceous imbricated 
petiolate bracts, the upper ones having in their axils a single flower on a pedicel, bibracteolate, all 
densely tomentose. Fig. l, a flower on its bibracteolate pedicel, the corolla in bud. Fig. 2, the 
corolla expanded. Fig. 3, the same cut open, to show the dextrorse contortion of the segments and 
the position of the stamens. Fig. 4, the calyx, with the sepals thrown back to show the few minute 
basal scales, the 5-cleft disk, the ovaries, style, and clavuncle: all natural size. Fig. 5, a stamen. 
Fig. 6, the style, clavuncle, and stigmata: both magnified. Fig.7, the disk and ovaries, more magnified. 
Prare XIX. 
Stipecoma ovata, portion of a plant in fruit. . Fig. 1, the two erect follicles conjoined at the apex, one 
of them gaping open, dehiscing along the ventral suture, and showing in the centre the tubular sub- 
membranaceous placenta, charged inside with numerous imbricate seeds. Fig. 2, a transverse section of 
the follicle beginning to dehisce, with the placenta separating at the keel from the sutural margins. 
Fig. 3, a transverse section of the placenta, showing the keel separated from the said margins, free from 
the pericarp on the dorsal side: all natural size. Fig. 4, a portion of the submembranaceous placenta, 
viewed from the inside, showing the many slender parallel ribs, resolved at distant intervals into a small 
cone-shaped appendage open at the bottom and concealing the funicle of a seed attached at its ape 
