In the present paper Pseudotremellodendron, a new genus of the Tremellaceae is described with P. pusio as the type species, and it is suggested that the following should be regarded as synonyms of this fungus - viz. - Clavaria flagelliformis, Thelephora archeri, and Tremellodendropsis transpusio.

These fungi have in the past been regarded as members of the Clavariaceae, and were placed by the old mycologists in the genera Clavaria or Lachnocladium, with the exception of L. archeri which was originally described by Berkeley as a member of the Thelephoraceae in the genus Thelephora. Corner (1950) described the genus Aphelaria for those clavarioid fungi with monomitic structure and flattened branching, and in it he included these plants. Later (1953) he erected the subgenus Tremellodendropsis for these species with clamped hyphae and subtremellaceous basidia, designating Aphelaria tuberosa (Grey.) Corner as the type species. This subgenus he distinguished from Tremellodendron on the grounds that the basidia were clavate and not truly tremellaceous and that the hyphae possessed clamps and did not become very thick wallet Crawford (1954) raised Tremellodendropsis to generic rank, separating it from Aphelaria on account of the clamped hyphae and partially or completely cruciately septate apices of the basidia. At the same time she described the new subgenus Transeptia for those species in which the apices of the basidia are completely cruciately septate, with Tremellodendropsis transpusio as the type species. It is the view of the present author that with the exception of the type species of Tremellodendropsis [T. tuberosa (Grey.) Crawford] all the species placed by Crawford in the genus have truly tremellaceous basidia and do in fact belong to the Tremellaceae. Consequently the genus Pseudotremellodendron is here described with P. pusio as the type species.