PRIMARY GROUPS OF FUNGIj 231 



The whole of this chapter, with the exception of the 

 last paragraph relating to coffee disease, appeared in the 



FIG. 56. Hemileia vastatrix, a fungus belonging to the 

 Uredineae, causing the destructive coffee disease, i, portion 

 of a coffee leaf showing diseased patches, which are bright 

 orange in colour ; 2, a diseased patch, slightly enlarged, 

 showing a sorus or group of uredospores ; 3, uredospores, 

 highly mag. 



Gardeners' Chronicle^ Dec. 23 and 30, 1905, and Jan. 6, 

 1906. 



III. CLASSIFICATION 



PRIMARY GROUPS OF FUNGI 



The three primary groups of fungi Phycomycetes, 

 Ascomycetes, and Basidiomycetes established long ago 

 from a purely morphological standpoint, still stand un- 

 assailed ; in fact, the problem mostly exercising the minds 



