274 DESCEIPTION OP THE PLATES. 



Plate XXII. 

 Dipladenia illustris, a plant in flower and fruit, the stem arising from a tuberose root. Fig. 1, the calyx 

 and pedicel of a flower. Fig. 2, the sepals, thrown back to show their inner scales, one of the two 

 opposite lobes of the disk nearly as large as the two ovaries : both natural size. Fig. 3, the same, 

 magnified. Fig. 4, the same, with the addition of the style and clavuncle. Fig. 5, the corolla cut 

 open, showing its large segments with dextrorse convolution, and the position of the stamens : both 

 natural size. Fig. 6, a stamen, seen before and behind, magnified. Fig. 7, the two ovaries and two 

 lobes of the disk, seen from above, showing their relative positions, magnified. Fig. 8, the two 

 follicles. Fig. 9, a seed : both natural size. 



Plate XXIII. 



Micradenia crassinoda, portion of a plant in flower. Fig. 1, the calyx and pedicel. Fig. 2, the corolla in 

 bud. Fig. 3, the coroUa expanded, cut open to show the simple dextrorse convolution of its segments 

 and the position of its stamens. Fig. 4, a stamen : all natural size. Fig. 5, a stamen, magnified. 

 Fig. 6, the sepals, thrown back to show the disk, style, and clavuncle, natural size. Fig. 7, the same 

 parts, showing the two inner bifid scales within each sepal (the two smaller opposite lobes of the 

 disk alternate with the two pointed ovaries), the style, clavuncle, and stigmata, magnified. Fig. 8, 

 the two follicles. Fig. 9, a comose seed : both natural size. 



Plate XXIV. 



A. Homaladenia tenuifolia, one of several slender erect stems, all issuing from a napiform root, in flower 



and fruit. Fig. 1, a flower in bud. Fig. 2, the same expanded : both natural size. Fig. 3, the 

 calyx. Fig. 4, the corolla in bud. Fig. 5, the same, cut open to show the simple dextrorse convo- 

 lution of its segments and the position of the pilose ring, on which the stamens are inserted. Fig. 6, 

 the cone of cohering anthers. Fig. 7, a single anther. Fig. 8, the calyx, with the sepals thrown 

 back to show the small 2-lobed disk, the two ovaries, style, and clavuncle : all natural size. Fig. 9, 

 the lobes of the disk alternate with the two ovaries, magnified. Fig. 10, the two ovaries and two 

 lobes of the disk, to show their relative positions, more magnified. Fig. 11, the two follicles. 

 Fig. 12, a seed crowned by a double coma. Fig. 13, the albumen extracted. Fig. 14, the embryo : 

 all natural size. 



B. Prestoniopsis pubescens, portion of a plant in flower. Fig. 1, a flower in bud. Fig. 2, the calyx. 



Fig. 3, the corolla in bud : all natural size. Fig. 4, the calyx, magnified. Fig. 5, the corolla in 

 bud. Fig. 6, the same, cut open to show the simple dextrorse convolution of the segments and 

 the position of the stamens inserted near the base of the tube. Fig. 7, a stamen : all equally 

 magnified. Fig. 8, a stamen, much magnified. Fig. 9, the calyx, with the segments thrown back 

 to show one of the lobes of the disk, half as long as the two alternate ovaries, the short style, 

 and clavuncle, natural size. Fig. 10, the style, clavuncle, and stigmata, magnified. 



Plate XXV. 



Amblyanthera Claussenii, portion of a plant, with its lateral raceme, the flowers half concealed by its large 

 imbricated foliaceous bracts. Fig. 1, a flower in bud, with its basal bract mnch longer than the calyx. 

 Fig. 2, the calyx. Fig. 3, the corolla in bud. Fig. 4, the same, cut open to show the simple 

 sinistrorse convolution of the segments and the position of the stamens. Fig. 5, the stamens, with 

 the anthers cohering in a cone. Fig. 6, a stamen separated : all natural size. Fig. 7, a stamen, 

 shown on its inner face. Fi^. 8, the same, on its outer face. Fig. 9, the same, on its edge. Fig. 10, 



