DESCEIPTION OF THE PLATES. 



Plate I. 



A. Pruit oi ffancornia speciosa. Fig. 1, a ripe fruit. Fig. 2, a longitudinal section of the same^ showing 



the seeds imbedded in a whitish soft flesh exuding a milky juicej without any apparent dissepi- 

 ment or placenta. Fig. 3, a seed, shown on the ventral and dorsal sides, and on the edge ; the testa, 

 which is corrugated, adheres to the flesh by a small peltate hilum. Fig. 4, the nucleus is white, 

 oval, compressed, with a small hollow below the apex, shown in front and on the edge : all 

 natural size. Fig. 5, the same : magnified. Fig. 6, the embryo, seen on its face and on its edge : 

 equally magnified. 



B. Ambellania cucumerina. Fig. 1, a portion of a branch, showing its leaf and axiUary raceme. Fig. 2, a 



flower in aestivation. Fig. 3, the corolla of the same. Fig. 4, the same cut open : all natural size. 

 Fig. 5, the same, magnified, showing the five hairy lines in the mouth, alternate with the segments, 

 and the position of the stamens. Fig. 6, a stamen, seen before and behind, magnified. Fig. 7, ovary, 

 style, clavuncle, and stigmata : natural size. Fig. 8, the same, three times magnified. Fig. 9, the 

 ovoid pentagonal fruit. Fig. 10, a transverse section of the same, showing many seeds attached to 

 the thick fleshy dissepiment. Fig. 11, a seed peltately attached, seen before and behind : natural 

 size. Fig. 12, the same, seen on its ventral face and on its edge, showing the position of the hilum 

 and its raphe. Fig. 13, a longitudinal section of the same, showing the position of the embryo. 

 Fig. 14, the embryo : all equally magnified. 



C. Ceratites amcena. Fig. 1, a portion of a branch, showing a leaf and the axillary raceme, natural size. 



Fig. 2, the raceme, magnified. Fig. 3, a flower of the same. Fig. 4, the same, showing the horn-like 

 appendages of the corolla : more magnified. Fig. 5, the calyx, ovary, style, clavuncle, and stigmata. 

 Fig. 6, the corolla cut open, showing the position of the stamens : both equally magnified. Fig. 7, a 

 stamen, seen before and behind. Fig. 8, the disk, ovaries, style, clavuncle, and stigmata : both more 

 magnified. 



D. Pomphidea Swartziana. Fig. 1, portion of the plant, with a leaf and raceme. Fig. 2, a flower : both 



natural size. Fig. 3, the five unequal sepals. Fig. 4, the inner plurideutate scale at the base of 

 each sepal. Fig. 5, the pustulate corolla cut open, showing its dextrorse sestivation and the 

 position of the stamens : all magnified. Fig. 6, the pustulate stamens, shown in different 

 positions, more magnified. Fig. 7, the disk. Fig. 8, the ovary and style. Fig. 9, a cross section of 

 the 2-celled ovary, the summit of the style seen from above, showing the enclosed stigmata. Fig. 10, 

 the two stigmata in the hollow of the style : all magnified. 



2m 



