Annot. by Jorge E. Wright (Buenos Aires, Argentina, Feb 1954): "Better spec. than TYPE at Kew. Intermediate with Schizastoma with which it agrees in microsc. charac." . . . Annot. by G. Moreno & A. Altés (Jun 1997): "The priority of the name Tulostoma obesum for the actual concept of T. volvulatum I.G.Borshch. will be published in a short time." [Mycol. Res. 103(1): 91-98 (1999).