Name requested: Hypsizygus circinatusMycotaxon 81: 133.
Heterotypic synonym: Hypsizygus tessulatusMycologia 39 (1): 78, 79. Mycotaxon 36 (2): 340. 52 (1): 21, 36. 63: 225, 232, 233, 235. 70: 100. 82: 188, 201. Persoonia 10 (1): 89. Sydowia 5 (3-6): 453. Transactions of the Mycological Society of Japan 25 (1): 1, 9.
Heterotypic synonym: Pleurotus tessulatusMycologia 39 (1): 77, 78. 78 (4): 525, 526. Transactions of the Mycological Society of Japan 25 (1): 1, 2.