40 GROUPS OF SPORE-FORMS 
The relations of the various groups to one another ar 
represented in the following diagram. The circle represent 
the Eu-forms; the substitution of any one chord in the plac 
of the arc which it subtends shows how the life-history i 
shortened in the other cases. Only the abnormal Endophyllun 
cannot be included in such a scheme; its spore-grouping coulc 
I) 
only be represented by the symbol O 1" | 
basidium 
teleutospore 
-opsis forms 
uredospore 
uredospore 
mycelium 
eecidiospore 
fusion-cell 
