Fig. 153. — Sphaerobolus stellatus. Glebal masses, after discharge, drawn with the 

 camera-lucida as if flat, to show the passage-ways through the thin pseudo- 

 parenchymatous layer (peridial layer no. 6) which completely envelops the 

 gleba. A, the upper half of a glebal mass : no passage-ways present. B, a 

 glebal mass cut vertically downwards into two halves ; the arrows point to the 

 apex of each half ; there are no passage-ways in the upper half of the gleba 

 but several below. C, glebal masses seen from below, only their lower 

 halves visible. The number of passage-ways is : in a, 3 ; in b and c, 6 ; in 

 d, 7 ; in e and /, 8 ; in g, 9 ; and in h and i, 10. Drawn by A. H. R. Buller 

 and Ruth Macrae. Magnification, 21. 



