266 DESCEIPTION OP THE PLATES. 



Plate II. 



Cupirana Aubletiana. Fig. 1, a portion of a branch, showing a leaf and its congested solitary flowers. 

 Fig. 2, a flower with its basal bract. Fig. 3, the pedicel and tubular calyx. Fig. 4, the inner calyx. 

 Fig. 5, the corolla. Fig. 6, the same cut open, showing the sinistrorse convolution of the segments 

 and the position of the stamens. Fig. 7, a segment of the corolla, seen on the iimer and outer sides. 

 Fig. 8, a stamen : all natural size. Fig. 9, a stamen seen before and behind, magnified. Fig. 10, a 

 pollen grain, highly magnified. Fig. 11, the disk, ovary, style, clavuncle, and stigmata, natural size. 

 Fig. 12, the disk and enclosed ovary, magnified. Fig. 13, a transverse section of the 2-celled ovary. 

 Fig. 14, the style, clavuncle, and stigmata : magnified. Fig. 15, the fruit, copied from Aublet (not 

 reversed), supported by the lacerated calyx and pedicel, natural size. 



Plate III. 



A. Aspidosperma Gomesianum. Fig. 1, a portion of a branch, with its expanded terminal panicle. Fig. 2, 



a flower. Fig. 3, the corolla : all natural size. Fig. 5, the coroUa, with sinistrorse convolution. 

 •Fig. 6, the same cut open, showing the position of the stamens. Fig. 7, a stamen. Fig. 8, calyx with 

 the sepals thrown back^ to show the ovaries and style : all magnified. Fig. 10, a fblHcle. Fig. 11, the 

 same, seen on its edge in the act of dehiscence. Fig. 12, a longitudinal section of the same, showing 

 each seed suspended from the summit by a slender funicle attached peltately to the central hilum of 

 the scutcheon of the winged seeds. Fig. 13, the eight parallel seeds, with the fiinicles of four averse 

 from the half of the pericarp on one side, and the other four also averse from the opposite half. 

 Fig. 14, a seed membranaceously winged round the scutcheon, with the central hilum attached to the 

 funicle. Fig. 15, the nucleus extracted from the scutcheon. Fig. 16, a longitudinal section of the 

 nucleus, showing the hetcrotropous embryo enclosed in the albumen. 



B. Thyroma sessiliflora. Fig. 1, portion of the plant, with its axiUary panicle in flower. Fig. 2, the 



same in fruit : natural size. Fig. 3, a flower and portion of the peduncle, magnified. Fig. 4, a flower, 

 more magnified. Fig. 5, the calyx and style. Fig. 6, the corolla cut open, showing the sinistrorse 

 convolution and the five scales opposite the segment and the position of the stamens. Fig. 7, a stamen, 

 shown before and behind : still more magnified. Fig. 8, the tubular disk enclosing two ovaries. 

 Fig. 9, the style, clavuncle, and stigmata : much magnified. Fig. 10, the very compressed flat follicle. 

 Fig. 11, the same, seen on its edge, showing the marginal suture. Fig. 12, the same in the act of 

 dehiscence, showing the four seeds in two series, both upper and lower, appended to the marginal 

 replum by as many horizontal flat funicles attached to the central hHum of each scutcheon upon 

 the face furthest from the pericarp. Fig. 13, a transverse section of the same. Fig. 15, the 

 dexter seed of the lower row, with an inferior scutcheon, showing the horizontal funicle upon 

 its inner face. Figs. 16 and 17, the sinister and dexter seeds of the upper row, with superior 

 scutcheons, showing that in both cases their funicles, facing one another, are turned to the middle 

 of the cell of the pericarp. Fig. 18, the embryo, as placed in the two last figures, seen on its face 

 and on its edge : all natural size. 



Plate IV. 

 A. Thevetia calophylla. Fig. 1, portion of a branch. Fig. 2, the coroUa cut open, showing the position 

 of the stamens : twice magnified. Fig. 3, a stamen, more magnified. Fig. 4, a profile view of the 

 stamen and its attachment to the corolla, with the faucial appendage. Fig. 5, the calyx, with the 

 sepals thrown back to show the inner basal scales, the disk, ovaries, and style : much magnified. 

 Fig. 6, the style, clavuncle, and stigmata, more magnified. Fig. 7, a transverse section of the 2-ceIIed 



