Microthecium perplexum D. Hawksw., Trans. Mycol. Soc. Japan 18: 151. 1977.

≡ Sphaerodes perplexa (D. Hawksw.) P.F. Cannon & D. Hawksw., Bot. J. Linn. Soc. 84: 148. 1982.

Notes.

This species produces non-ostiolate ascomata, 4-spored asci and citrifrom ascospores usually with smooth walls, but one third of these are coarsely reticulated. For morphological comparison see Notes of Mi. beatonii .