Tremellales » Trimorphomycetaceae


Trimorphomyces Bandoni & Oberw. 1983, in Oberwinkler & Bandoni, Systematic and Applied Microbiology, 4(1), 105-113. (1983)

Etymology: Tri - three; morpho- form; myces - fungus; because of the three assimilative states (haploid yeast, dikaryotic yeast, hyphae) in the life history.

Diagnosis: Fructifications minute, gelatinous, tuberculate, at first entirely conidial, later of mixed conidiophores and basidia. Hyphae hyaline, with clamps and haustoria, radiating, terminated by conidiogenous cells, basidia, or both of these; conidiogenous cells short, phialide-like, or elongate, cylindric. Conidia developing blastogenously and synchronously in closely situated apical pairs, conjugation occurring between members of the pair as they develop, the conidia released as H-shaped dikaryotic cells; conidia germinating by the synchronous formation of paired conjugating cells, a dikaryotic yeast phase resulting; alternatively, haustoria are produced in the presence of host hyphae. Basidia stalked, the upper portion pyriform to ellipsoid or subglobose, becoming cruciate septate. Basidiospores subglobose, germinating by repetition or by budding to form a monokaryotic yeast phase. Septa of the dolipore type, the parenthesome consisting of poorly developed (vestigial) structures.

Index Fungorum Number: IF25672

Type species: Trimorphomyces papilionaceus Bandoni & Oberw. 1983, in Oberwinkler & Bandoni, Systematic and Applied Microbiology, 4(1), 105-113. (1983).


Trimorphomyces nebularis R. Kirschner & Chee J. Chen 2008

Trimorphomyces papilionaceus Bandoni & Oberw. 1983

Trimorphomyces sakaeraticus Xin Zhan Liu, F.Y. Bai, M. Groenew., Boekhout & Yurkov 2015

Trimorphomyces sakaeraticus Fungsin, M. Takash. & Nakase ex Xin Zhan Liu, F.Y. Bai, M. Groenew. & Boekhout 2020



Oberwinkler, F., & Bandoni, R. (1983). Trimorphomyces: a new genus in the Tremellaceae. Systematic and Applied Microbiology, 4(1), 105-113.


About Basidiomycota

The webpage Basidiomycota provides an up-to-date classification and account of all genera of the phylum Basidiomycota.


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Thailand Science Research and Innovation (TSRI)

project entitled:

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