Name requested: Agaricus vaginatus var. albusMycotaxon 67: 240.
Homotypic synonym: Amanita vaginata var. albaMycologia 56 (4): 621. Mycotaxon 35 (2): 368. 53: 463, 464, 465. 56: 257, 263, 265. 60: 217. 67: 240. 83: 468, 492. Transactions of the Mycological Society of Japan 23 (4): 502.