 The fungus was first described scientifically in 1805 by Johannes <unk> von <unk> and Lewis David de <unk> as Peziza carbonaria . <unk> <unk> Cooke illustrated the fruitbodies , spores , and asci in his 1879 work <unk> , <unk> <unk> <unk> . Figures of fungi from all parts of the world . In 1889 , Pier Andrea <unk> transferred the fungus to the genus Geopyxis , giving the species its current name . <unk> carbonaria , published by Heinrich <unk> in 1884 , is a synonym of G. carbonaria . Louis @-@ Joseph <unk> proposed the variety Geopyxis carbonaria var. <unk> in 1937 , referring to forms producing fruitbodies without a stalk , but the taxon is not considered to have independent taxonomic significance . In 1860 Miles Berkeley and Moses Ashley Curtis described the species Peziza <unk> from collections made in Japan as part of the North Pacific Exploring and Surveying Expedition ( 1853 – 1856 ) . This taxon was synonymized with G. carbonaria by <unk> <unk> in 1968 , a taxonomic opinion corroborated by Donald <unk> about a decade later . 
