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THE ACTINOMYCETES, Vol. II 



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Plate IV. Morphological types, according to Nomi (1959). a. represents a schematic presentation 

 of each type; b. gives the actual photograph. 



A. Aerial hyphae flexuous or straighl ; spirals extended to compact (S. coelicolor). 



B. Aerial hyphae straight; spirals on side branches OS. purpurascens) . 



(See continuation, next plate). 



