Explanation of PL XXVIII. 



'iii r<iinl<ii<'iixix HAY AT A. 



Fig. 1. The plant. 



2. A flower. 



3. Calyx expanded. 



4. Corolla expanded. 



5. A corolla-lobe. 



G. Stamens, seen from different sides. 



7. An ovary. 



8. A capsule. 



9. A seed. 



