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Fig. 26. Marginal areas of colonies of representative species of the Aspergillus 

 glaucus group showing the relative size and arrangement of perithecia (conidial 

 heads not in focus): A, Aspergillus repens;B, A. chevalieri; C, A. ruber; D, A. am- 

 stelodatnt; E, A. echinulatus . Figures X 10; inserts X 30. (Reprinted from Thorn 

 andRaper, "The Aspergillus glaucus Group," U.S. D. A. Misc. Pub. 426: 1-46. 1941.) 



106 



