 Working with Underwood 's guidance , Kupfer compared the microscopic structure of the hymenium ( the fertile , spore @-@ bearing tissue ) of the Texan species with a number of similar ones — Geopyxis carbonaria , Urnula craterium , and Urnula terrestris ( now known as Podophacidium xanthomelum ) . She concluded that the Texan species was so dissimilar as to warrant its own genus , which she named Chorioactis . Although this taxonomical change was opposed in later studies of the fungus by Frederick De Forest Heald and Frederick Adolf Wolf ( 1910 ) and Fred Jay Seaver ( 1928 , 1942 ) , Chorioactis was established as a valid genus in 1968 by Finn @-@ Egil Eckblad in his comprehensive monograph about the Discomycetes . 
