Fruit bodies were first collected in Austin, Texas, and the species was named Urnula geaster in 1893; it was later found in Kyushu in 1937, but the mushroom was not reported again in Japan until 1973. Although the new genus Chorioactis was proposed to accommodate the unique species a few years after its original discovery, it was not until 1968 that it was accepted as a valid genus. Its classification has also been a source of confusion. Historically, Chorioactis was placed in the Sarcosomataceae family of fungi, despite inconsistencies in the microscopic structure of the ascus, the saclike structure in which spores are formed. Phylogenetic analyses of the past decade have clarified the fungus's classification: Chorioactis, along with three other genera, make up the Chorioactidaceae family, a grouping of related fungi formally acknowledged in 2008. In 2009, Japanese researchers reported discovering a form of the fungus missing the sexual stage of its life cycle; this asexual state was named Kumanasamuha geaster.
Read more about Chorioactis: History, Classification and Naming, Description, Distribution, Ecology, and Habitat