 Chorioactis geaster has a disjunct distribution, and has only been collected from Texas and Japan. The first reported collection in Japan was in Kyushu in 1937, and then it was not collected again in that location until thirty-six years later. In 2006, it was observed in a humid forest near Kawakami, Nara Prefecture. The fungus's natural habitat in Japan is disappearing because of the practice of deforestation and replanting with Japanese cedar (Cryptomeria japonica). This rare mushroom has been put on the list of threatened species in Japan. In Texas, the fungus has been reported in Collin, Hays, Travis, Dallas, Denton, Guadalupe, Tarrant and Hunt counties. Travis, Hays, and Guadalupe counties are in central Texas, while the remainder are clustered together in the northeastern part of the state. Although the species is considered rare due to its globally restricted distribution, it may be locally abundant.
