The authors describe a new species of the genus Botryobasidium Donk (Corticiaceae) which represents the perfect state of Oidium simile Berk, and name this species Botryobasidium simile Pouzar et Holubová-Jechová. This new species is very similar to Botryobasidium conspersum John Erikss., from which it differs by slightly larger spores.
Pouzar Z., Holubová-Jechová V. (1969): Botryobasidium simile spec. nov. and a perfect state of Oidium simile Berk. – Česká Mykologie 23(2): 97–101.