' % 
’ 
2 
Ir 
i 
' 
a 
+ \ 
7 
: * 
k ; 
Fic. 85.—I. Horizontal section through the epidermis of the under-side of the leaf of 
Luonynus japonicus, looked at from below ; sf stomata (x 370); II. Course of | 
development of the stoma of Arthropcdium cirrhatunz; s pue_mother-cell — 
ready for division ; sf', sf'', sf" successive stages of division: III. Mature ~ 
stoma. (x 370.) 3 
