1960] 



MORPHOLOGY AND RELATIONSHIPS OF DIOMMA 



47 



Fig. 4. A, Diomma species B, transection through leaf to illustrate marginal secretory 

 cavities s and secretory cells c in palisade mesophyll, X 140. B, D. fruticosa, paradermal sec- 

 tion of leaf showing secretory cells c among chlorenchymatous cells of the palisade mesophyll 

 and scattered secretory cavities s, X 180. 



