Name requested: Armillariella ostoyaeMycotaxon 30: 111, 114.
Homotypic synonym: Armillaria ostoyaeMycologia 81 (2): 216, 219, 220, 222, 223, 224. 83 (3): 297, 299. 85 (2): 165, 167, 168, 169, 170, 171, 172, 173. 85 (3): 365, 366, 367. Mycotaxon 30: 101, 103, 106, 107, 110, 111, 112, 114. 44 (2): 267, 268, 271, 272. 65: 264, 268. 70: 100. 81: 120. 82: 221. 85: 207. 93: 321. 104: 349, 359. Persoonia 14 (4): 484.
Heterotypic synonym: Armillariella obscuraMycotaxon 30: 110, 114. 81: 121. Sydowia 30: 213, 214.
Heterotypic synonym: Armillaria obscuraMycologia 79 (4): 612. Mycotaxon 30: 101, 114. 44 (2): 267, 268. 65: 268. 81: 120.