i86 



RESEARCHES ON FUNGI 



A yeast cell of S. roseus, which was observed continuously for 

 several hours, developed three sterigmata and three spores. The 



Fig. 92.~iSporobolomyces roseus. A yeast cell on malt-agar, seen from above, which 

 produced three spores in succession, each spore on a different sterigma. A, the 

 yeast cell which has just developed its first sterigma ; B, the sterigma now 

 bears a half-grown spore ; C, the first spore is fully grown ; D, the first spore 

 has now been discharged and the sterigma can be seen again ; E, a second 

 sterigma is developing ; F, the second spore is half-grown ; G, the second 

 spore is fully grown ; H, the second spore has now been discharged and the 

 first and second sterigmata can both be clearly seen ; I, a third sterigma is 

 developing ; J, the third spore is half -grown ; K, the third spore is fully grown ; 

 L, the third spore has now been discharged and the first, second, and third 

 sterigmata are left behind in situ. Drawn by A. H. R. Buller and Ruth Macrae. 

 Magnification, 2100. 



first sterigma produced and shot away a spore (Fig. 92, A--D) ; then, 

 after an interval of about an hour, a second sterigma began to develop 



