20 ART. 1. — A. YASUDA : OX THE 



rarely has stomata on the upper surface of the blade ; Trichosan- 

 ihe>< japonica and T. multiloba have them ; still more rarely, in 

 the neighbourhood of the veins ; and Schizopcpon bri/oniœf alius, 

 var. japonicus and Gymnostemma cissoides have none at all. 



In all species the under-surface of the blades has greater 

 number of stomata. The following show the average numbers 

 of them on the under-surface : 



Cucurbita Pepo 



Benincam cerlfera 



Cucumis JL'lo 



C. sali vus 



Trichosanthes cucumeroides 



Lage n a) • in v ulg avis 



Citr u II u s vu lija ris 



Trieb osanthes japoiiica 



T. multiloba 



Luffa cylindriea 



L. acutangula 



3Iomordica Charantia 



Schizopepon hryoni<cfolius, var. 



jap>07iicus 200 ,, 



Melothria japonica 172 ,, 



Actinosteïiinm ractmosuin 1()S ,, 



Gymnosteimna cissoides \)1 „ 



Trirhoiius. The trichomes on the blades follow the types 

 of those on the stems. Their shapes are (]uite the same on the 

 up})er nnd lower surfaces. Their number on the lower surface is 

 generally greater than that on the upper surface, except in Jlelothria 

 japonica, /Schizopepon bryoniœfolius, var. japonicus, Jlomordica 



