418 Dr. Planchon on Melianthese, a new Natural Order. 



in floribus omnibus stylo exserto praeditis (qui tantum mihi suppeterant) pollen in an- 

 theris frustra quaesivi. An igitur revera plus quam una species ? 



EXPLANATION OF PLATE XX. 



Fig. 1. A flower of Melianthus Himalayarms, Wall. 



Fig. 2. The same, with half of the calycine segments removed. 



Fig. 3. The four posterior petals inserted round the concave glandular disc, with part of the 



receptacle which supports both petals and disc. 

 Fig. 4. YXowevs, oi Melianthus major, ^. 



Fig. 5. The same, with half of the calycine segments removed. 

 Fig. 6. The half of the posterior part of the calyx, and gland. 

 Fig. 7. The four posterior petals around the disc: — side view. 

 Figs. 8 & 9. Two different forms of the fifth anterior abortive petal. 

 Fig. 10. The fruit of Melianthus major, a. : — natural size. 

 Figs. 11, 12, 13. Seed and embryo of the same: — copied from M. Ad. de Jussieu's memoir 



on Rutacea. 

 Fig. 14. A flower oi Diplerisma mintis. 

 Fig. 15. One of its lateral petals. 

 Fig. 16. A flower of Diplerisma comosum. 

 Fig. 17. The same, after the cutting off of the posterior and one of the lateral and anterior 



calycine segments. 

 Fig. 18. Ovarium oi Diplerisma comosum, with one of its cells cut open. 

 Fig. 19. Diagram of Diplerisma comosum; d, posterior calycine segment; c,c,c,c, other 



calycine segments ; p,p,p,p, petals ; d, disc ; s, s, s, s, stamens ; 0, ovarium. 

 Fig. 20. The fruit of Diplerisma minus : — natural size. 



Y\g.2\. KQ.oyie.r oi Natalia Paullinidides. ^ 



Fig. 22. Internal organs, and one of the posterior petals of the same. 

 Fig. 23. Disc. 



Fig. 24. A flower of Bersama Abyssinica. 



Fig. 25. The same, after the removal of the petals and the forcible expansion of the calyx. 

 Fig. 26. The capsule of Bersama Abyssinica. 

 Figs. 27 & 28. Seed and embryo oi Bersama integrifolia. Rich.: — copied from Ach. Richard's 



Tent. Fl. Abyss. 

 Obs. All the parts are more or less magnified, except when the contrary is stated. 



