Microthecium compressum Udagawa & Cain, Can. J. Bot. 47: 1921. 1970.

≡ Sphaerodes compressa (Udagawa & Cain) P.F. Cannon & D. Hawksw., J. Linn. Soc., Bot. 84: 145. 1982.

Notes.

This species is distinguished by the production of non-ostiolate ascomata and citriform, bilaterally flattened ascospores, with the narrow faces coarsely reticulate and the widest faces smooth or nearly so, along with the production of a phialidic asexual morph.