Basionym:
Agaricus marcescibilis Britzelm., Hymenomyceten aus Südbayern 9: 12, fig. 209 (1891) [MB#633519]
Obligate synonyms:
- Psathyrella marcescibilis (Britzelm.) Singer, Lilloa 22: 466 (1951) [MB#304297]
- Hypholoma marcescibile (Britzelm.) Sacc., Syll. Fung. 11: 71 (1895) [MB#152629]
Taxonomic synonyms:
- Psathyrella fragilissima J.E. Lange, Mem. New York Bot. Gard. 24: 94 (1972) [MB#321189]
- Drosophila involuta Romagn., Bull. Mens. Soc. Linn. Lyon 21: 156 (1952) [MB#296990]
- Psathyrella involuta (Romagn.) M.M. Moser, Kleine Krypt.-Fl. 2b (2): 217 (1967) [MB#337674]
- Psathyra lactea J.E. Lange, Flora Agaricina Danica 4: 7 (1940) [MB#304269]
- Psathyrella lactea (J.E. Lange) J.E. Lange, Flora Agaricina Danica 4: 92 (1940) [MB#304293]
- Agaricus marcescibilis Britzelm., Bot. Centralbl. 54 (3): 69 (1893) [MB#455842]
- Drosophila marcescibilis (Britzelm.) Romagn., Bull. mens. Soc. linn. Lyon: 51 (1944) [MB#296997]