VIII. CLASSIFICATION OF FUNGI. 



For practical purposes FUNGI may be divided into: 



1. Hymenomycetes (including the mushrooms, etc.). 



2. Hyphomycetes (moulds). 



3. Blastomycetes (yeasts and torulae) . 



4. Schizomycetes (bacteria). 



NOTE. Formerly myxomycetes were included in the fungi; 

 they are now recognized as belonging to the animal kingdom, 

 and are termed "mycetozoa." 



MORPHOLOGY OF THE HYPHOMYCETES. 



At the commencement of his studies, the attention 

 of the student is directed to the various non-pathogenic 

 moulds and yeasts, not only that he may gain the 

 necessary technique whilst handling cultivations of 

 harmless organisms, but also because these very species 

 are amongst the commonest of those that may acci- 

 dentally contaminate his future preparations. 



The hyphomycetes are composed of a mycelium of 

 short jointed rods or "hyphae" springing from an axis 

 or germinal tube which develops from the spore. 

 Hyphae are 



(a) Nutritive or submerged. 



(b) Reproductive or aerial. 



The protoplasm of these cells contains granules, 

 pigment, oil globules, and sometimes crystals of cal- 

 cium oxalate. 



Reproduction. Apical spore formation asexual ; 



zoospores sexual . 



Mucorinae. Mucor (Fig. 77). Note the branching 

 filaments "mycelium" (a), " hyphae" (b). 

 Note the asexual reproduction. 



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