DIVISION III 



EUMYCETES. TRUE FUNGI (p. 3) '■"' "• "• "• "• ""*' 



The Vegetative Body is devoid of chlorophyll and typically 

 consists of a more or less branched filament of apical growth, the 

 mycelium. This myceUum may be cut into cells by partitions 

 (septa) or may be continuous, i. e., without septa. The cells of 

 the septate mycelium do not differ essentially from typical plant 

 cells except in the absence of chlorophyll. They consist of masses 

 of protoplasm, the protoplasts, bearing vacuoles and are more or 



less rich in oils, acids, 



gums, alkaloids, sug- 

 ars, resins, coloring 

 matter, etc., varying 

 in amount and kind 

 with the particular 

 species and condition 

 of the fungus. The 

 protoplast is covered 

 by a cell wall which 

 consists of cellulose 

 though often of a 

 special quality known 

 as fungous cellulose. 

 The protoplast bears 

 one or in some fungi 

 two or more nuclei. 

 The vacuolation of the protoplasm, the mode of branching of the 

 cells, their color, dimensions, etc., are in some cases quite charac- 

 teristic. 



In one class, the Phycomycetes, the active vegetative mycelium 

 possesses no septa except such as serve to cut off the sexual or 

 other reproductive organs or such as are found in senility. The 



59 



Fig. 35. — Showing a septate mycelium within host 

 cells. After Stevens and Hall. 



