Name requested: Agaricus marmoreusMycologia 7 (5): 273. 78 (4): 525, 526. Sydowia 35: 52. Transactions of the Mycological Society of Japan 25 (1): 4, 9.
Homotypic synonym: Hypsizygus marmoreusMycologia 78 (4): 525, 526. 85 (3): 348, 349. Mycotaxon 9 (1): 253. Sydowia 35: 62. Transactions of the Mycological Society of Japan 25 (1): 1, 4, 5, 9. 26 (3): 353, 369. 27 (3): 328.
Heterotypic synonym: Hypsizygus elongatipesMycologia 78 (4): 525, 526. Transactions of the Mycological Society of Japan 25 (1): 1, 4, 9.
Heterotypic synonym: Pleurotus elongatipesMycologia 58 (2): 270. 61 (6): 1115. 78 (4): 525, 526. Transactions of the Mycological Society of Japan 25 (1): 3, 4. 26 (3): 354.