A new species of Tremella parasitic on Rhytidhysterium rufulum

A new species of basidiomycete parasitizing the ascocarps of Rhytidhysterium rufulum is described and named Tremella rhytidhysterii Bezerra and Kimbrough sp.nov. The mycelial interaction between two species is studied with both light and electron microscopy. The cytological development of basidia and basidiospores is also described. Ultrastructural aspects of the Cryptococcus imperfect state are described and compared with other described species.