PLATE 26 



HvW i P - -\ 



my&S$ ; 



156 



154. I poinaa 



155. I pomtta 



156. I poni(fd 



157. Ipomtza 

 158. 



159. 



cnccinca. Socti f upper rpiclrrniis at base of mature leaf, showing numerous stomata, regular dis- 

 tribution of stomata, straight-walled cells, and no hairs. 



quamoclit. The same, showing fewer stomata; stomata grouped mainly at veins, wavy-walled cells and 

 short dagger-like hairs. 



sloteri. The same, showing more stomata than in 7. quamoclit, but- fewer than in /. cnccinca, moderately 

 wavy-walled cells, longer hairs, and larger cells and stomata. 



coccinea. Section of same at margin of leaf, showing protuberances from marginal cells. 

 quamoclit. The same, showing Hat marginal cells, no protuberances. 

 sloteri. The same, showing smaller protuberances from marginal cells. 



