Notes on the Choanephoraceae

Abstract
Blakeslea circinans Naganishi & Kawakami has been recombined as Choanephora circinans. Description of its growth on synthetic mucor agar and its natural distribution are given. The zygospores are reported for the first time and are similar to those observed in the other species of Choanephora. Imperfect hybridization between certain species of Choanephora is reported. Evidence is presented for maintaining the species, C. conjuncta Couch.