PLATE XVII. . 
Exhibits a drawing of Fabiana denudata. Fig. 1, Calyx 
and pistil; Fig. 2, corolla, both nat. size; Fig. 3, calyx with 
bractiform leaflet; Fig. 4, corolla; Fig. 5, calyx, one half 
removed, to show the stipitate ovarium upon its glandular 
disc, with its style and stigma; Fig. 6, corolla cut open; 
Fig. 7, stamens before bursting; Fig. 8, stamens after dehis- 
cence; Mg. 9, pollen; Fig. 10, stigma; Fig. 11, capsule, 
with persistent calyx; Fig. 12, capsule with half of calyx 
removed, to show the persistent gland and stipes; Fig. 13, 
- transverse section of capsule, with seeds removed from one 
of the cells, to show placenta; Fig. 14, capsule after dehis- 
cence; Fig. 15, valves separated, to show inflected margins ; 
Fig 16, placente, seen front and sideway; Fig. 17, seeds in 
different positions: Fig. 18, longitudinal section of seed ; 
Fig. 19, embryo: all much magnified. 
PLATE XVIII. 
A presents a figure of Nierembergia rivularis. Fig. 1, the 
corolla in bud; Fig. 2, transverse section of ditto, to show 
the mode of estivation; Fig. 3, border expanded, seen from 
above: all nat. size; Fig. 4, stamens in bud, removed to 
show the mode in which they are embraced by the stigma; 
