TUBERALES 



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Fig. 110. Truffles. A. Ascocarp of Genea verrucosa, in section. B. Ascus 

 and ascospores of G. verrucosa. C. Ascocarp of Tuber bruviale, in sec- 

 tion. D. Ascus and ascospores of T. bruviale. (Adapted from Tulasne.) 

 E. Ascospore of Hydnobolites californicus. (Adapted from Gilkey.) F. 

 Ascospore of Hydnotrya tidasnei. (Adapted from Massee.) G. Ascospore 

 of Viersonia alveolata. (Adapted from Gilkey.) 



