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Fig. 49. Htille cells. A, Characteristic thick-walled, globose to subglobose hiille 

 cells of the Aspergillus nidulans group, A. variecolor, NRRL. No. 1954, X 450. B, 

 Aspergillus caespitosus, strain NRRL No. 1930, hiille cells irregular in form and 

 often poorly developed but of the same general pattern as A. nidulans, X 275. C, 

 Aspergillus janus, NRRL No. 1787, hiille cells approximately globose and of the 

 same basic type as in A. nidulans, X 450. D, Aspergillus granulosus, NRRL No. 

 1932, hiille cells globose to ovoid, somewhat intermediate between A. nidulans and 

 A. ustus, X 275. E, Aspergillus ustus, NRRL No. 280, characteristic hiille cells, 

 elongate and much twisted, X 450. Hiille cells in Aspergillus flnvipes are of the 

 same pattern. F, Aspergillus carneus, NRRL No. 1926, heavy walled, strongly 

 septate mycelium suggestive of hiille cells, X 275. 



176 



