Basionym: Agaricus durus Bolton, An History of Fungusses, Growing about Halifax 2: 67, pl. 67 (1788) [MB#202545] Obligate synonyms: - Pholiota dura (Bolton) P. Kumm., Der Führer in die Pilzkunde: 84 (1871) [MB#219983] - Togaria dura (Bolton) W.G. Sm., Synopsis of the British Basidiomycetes: A descriptive catalogue of the drawings and speciments in the department of Botany British Museum: 123 (1908) [MB#456991] - Hylophila dura (Bolton) Quél., Flore mycologique de la France et des pays limitrophes: 97 (1888) [MB#492955] Taxonomic synonyms: - Pholiota dura var. xanthophylla Bres., Fungi Tridentini 2 (11-13): 52 (1898) [MB#137880] - Agrocybe dura var. xanthophylla (Bres.) P.D. Orton, Transactions of the British Mycological Society 43 (2): 174 (1960) [MB#349004] - Agrocybe molesta var. xanthophylla (Bres.) Bon & Courtec., Documents Mycologiques 18 (70-71): 37 (1987) [MB#132862] - Agaricus vermifluus Peck, Annual Report on the New York State Museum of Natural History 31: 34 (1879) [MB#486974] - Pholiota vermiflua (Peck) Sacc., Sylloge Fungorum 5: 739 (1887) [MB#221413] - Agrocybe vermiflua (Peck) Watling, Kew Bulletin 31 (3): 592 (1977) [MB#308410]