36 FUNGOID DISEASES 



are nine or more orders and twenty to twenty-five 

 families. The common mushroom, puff-ball, and 

 bracket or ear fungi belong to this group. 



Class Teliosporece. Vegetative hyph^e septate. 

 Parasitic for the whole, or most of the life cycle. 

 Perfect stage of reproduction by the production of 

 teliospores (teleutospores or sometimes chlamydo- 

 spores) which bear on germination a short pro- 

 mycelium on which are borne sporidia. This class 

 is often merged with the preceding as a sub-class in 

 which the pro-mycelium and sporidia are called 

 basidium and basidiospore respectively. 



Two orders — Ustilaginales the smuts (with two 

 families, Ustilaginacece — the smuts, and Tilletiacecc 

 — the bunts), and Uredinales the rusts with three 

 families. 



Besides these there is recoo^nized an artificial 

 group, the Fungi Imperfecti, consisting of fungi of 

 which only the vegetative or conidial stage is 

 known, the perfect stage probably belonging most 

 frequently to the Asconiycetece but in some cases 

 to the Basidiomycetece. There are three or four 

 orders and about ten families. 



The accompanying table represents a schematic 

 arrangement of the Vegetable Kingdom, illustrating 

 by the relative areas of the classes the relative 

 number of species in each, while the solid lines 

 represent their probable relationships within the 

 various phyla and the broken lines the probable 



