| 1 | Stipe white | 2 |
| – | Stipe coloured | 4 |
| 2 | Pileus white | Mycenasubaquosa |
| – | Pileus coloure | 3 |
| 3 | Pileus pink and lamellae emarginate, pileipellis without inflated terminal cells | Mycenarosea |
| – | Pileus brown and lamellae adnate, pileipellis with fusiform, subcylindrical to lageniform terminal cells | Mycenadura |
| 4 | Lamellae edge with coloured dots | 5 |
| – | Lamellae edge white or without dots | 6 |
| 5 | Caulocystidia present, spores almost broader than 4 μm | Mycenalammiensis |
| – | Caulocystidia absent, spores almost narrower than 4 μm | Mycenapelianthina |
| 6 | Basidiospores inamyloid | 7 |
| – | Basidiospores amyloid | 10 |
| 7 | Pleurocystidia absent | 8 |
| – | Pleurocystidia present | 9 |
| 8 | Stipitipellis and caulocystidia smooth | Mycenapearsoniana |
| – | Stipitipellis and caulocystidia with nodulose excrescences | Mycenasubcorticalis |
| 9 | Pileipellis gelatinised, caulocystidia absent, cheilo- and pleurocytsidia base uncontracted, disc greyish-red or orange white in pileus | Mycenasirayuktha |
| – | Pileipellis not gelatinised, caulocystidia present, cheilo- and pleurocytsidia base contracted, disc wood brown or reddish-brown in pileus | Mycenavinacea |
| 10 | Pleurocystidia present | 11 |
| – | Pleurocystidia absent | 16 |
| 11 | Caulocystidia absent, almost cheilocystidia apically mucronate or subcapitate | Mycenacahaya |
| – | Caulocystidia present, almost cheilocystidia apically broadly rounded | 12 |
| 12 | Caulocystidia with apical excrescences, spores more than 5.6 μm width | Mycenaclarkeana |
| – | Caulocystidia without apical excrescences, spores less than 5.6 μm width | 13 |
| 13 | Cheilocystidia base uncontracted | Mycenapolycystidiata |
| – | Cheilocystidia base contracted | 14 |
| 14 | Stipe brown to dark brown, Qav = 1.5 | Mycenanullawarrensis |
| – | Stipe not brown to dark brown, Qav > 1.5 | 15 |
| 15 | Pileus sulphur yellow to reddish-grey, stipe reddish-grey | Mycenaluteovariegata |
| – | Pileus generally pinkish or purplish, stipe whitish to pinkish-purple | Mycenapura |
| 16 | Caulocystidia absent | 17 |
| – | Caulocystidia present | 18 |
| 17 | Pileus brown to dark brown, spores weakly amyloid | Mycenaseminau |
| – | Pileus brownish-orange to greyish-yellow, spores amyloid | Mycenasinar |
| 18 | Cheilocystidia slender fusiform, with distinctly long and narrow protuberance | Mycenasubulata |
| – | Cheilocystidia clavate, utriform, subfusiform, or subcylindrical, with short mucronate or none | 19 |
| 19 | Spores less than 6 μm length | Mycenakuehneriana |
| – | Spores more than 6 μm length | 20 |
| 20 | Pileus more than 35 mm in diam., lamellae dark brownish-violet to reddish-violet | Mycenadiosma |
| – | Pileus less than 35 mm in diam., lamellae white | 21 |
| 21 | Lamellar trama subcellular, pileus lilac to purple | Mycenayuezhuoi |
| – | Lamellar trama subregular, pileus brownish | 22 |
| 22 | Cheilocystidia utriform, sometimes clavate, thin-walled, lamellae adnexed to emarginate | Mycenarufobrunnea |
| – | Cheilocystidia clavate with slightly inflated apex, thick-walled, lamellae sinuate to subdecurrent | Mycenashengshanensis |