Fig. 99. — Sporobolomyces roseiis. Abnormalities in development. Cultures 

 made on malt-agar. Cells fixed with formalin-acetic-alcohol and stained 

 with iron-alum haematoxylin. A, yeast cells producing spores ; a, normal ; 

 b, c, and d, the sterigmata are unusually long ; e, the sterigma is branohed 

 and has probably produced two other spores before the one here shown. 

 B, spores producing spores : a, normal ; b, the parent spore has two sterig- 

 mata at one end, the right-hand sterigma probably produced and shot away 

 a spore before the left-hand one began to develop ; c, a spore with three 

 sterigmata, each of which probably produced a spore, but in succession ; 

 d, the parent spore with a branched sterigma, probably a spore was first 

 produced on the now vacant point and then the sterigma branched and 

 produced a second spore as now shown, the nucleus is dividing ; e, a parent 

 spore which has a branched sterigma each point of which bears a spore, 

 probably one of the spores was produced first but failed to be discharged 

 and then the sterigma branched and produced the second spore. Drawn 

 by A. H. R. Buller and Ruth Macrae. Magnification, 2234. 



