339 
and embracing the uppermost portion of the stem. The free 
tip of each hypha forming the head becomes swollen into a sub- 
globose cell, from which spring several very slender, simple or 
sparingly branched conidiophores, each of which bears a single 
subglobose conidium at its apex. ‘The conidia are hyaline, and 
average 2°5 uw in diameter. This is the condition known as 
‘recent years been broken up into several genera, and those ascigerous 
forms which develop along with a Stilbum-like conidial stage, 
which previous to the present recor 
here are two distinct ways 
continued from 
Siege producing a fresh outbreak of f 
rom the above account it is obvious that : 
14163 B2 
