1888. | BOTANICAL GAZETTE. 297 
Under higher powers the surface view and sections of the 
bladders show that their wall is a thin membrane formed of a 
single layer of transparent, elongated, flat cells with very 
sinuous. side walls. Inside of the bladder a slender thread 
can be distinguished, which projects from the base into the 
Cavity. tec 
a pterally connected by short branches. 
Velopment of the sacs has been completed. The cells of its 
i ber and size, and have 
Wall have increased rapidly in num 
onsists of two or three rows of.long, wavy — 
soi a Sule etiam 
