Basionym: Tricholoma friesii Bres., Iconographia mycologica 3: 121 (1927) [MB#486227] Obligate synonym: Melanoleuca polioleuca var. friesii (Bres.) Gminder, Index Fungorum 302: 1 (2016) [MB#552076] Taxonomic synonyms: - Melanoleuca polioleuca f. langei Boekhout, Persoonia 13 (4): 426 (1988) [MB#133830] - Melanoleuca langei (Boekhout) Bon, Documents Mycologiques 20 (79): 61 (1990) [MB#127251] - Melanoleuca polioleuca var. langei (Boekhout) Gminder, Index Fungorum 302: 1 (2016) [MB#552077] - Agaricus subpulverulentus Pers., Mycologia Europaea 3: 221 (1828) [MB#145648] - Melanoleuca subpulverulenta (Pers.) Métrod, Schweiz. Z. Pilzk.: 56 (1939) [MB#300349] - Tricholoma subpulverulentum (Pers.) P. Karst., Bidrag till Kännedom av Finlands Natur och Folk 32: 54 (1879) [MB#188207] - Tricholoma humile f. robustum Bres., Iconographia mycologica 3: 128, t. 128 (1927) [MB#486228] - Melanoleuca humilis var. robusta (Bres.) Bon, Documents Mycologiques 9 (33): 75 (1978) [MB#352944]