1. Stipe rising from a basal disc
    1. With a separable, gelatinous pellicle
      1. Growing on wetland monocots (Juncus, Scirpus, Glyceria): Mycena bulbosa
      2. Tiny species, growing on fallen oak leaves: Mycena mucor
      3. Margin of basal disc ciliate. On fallen twigs, leaves, coniferous needles etc.: Mycena stylobates
      4. Pileus greyish, pubescent to setose; stipe entirely puberulous, springing from a setose basal disc: Mycena longiseta
      5. Spores subglobose; growing on bark of broad-leaved trees: Mycena clavularis

       

    2. Pileipellis not gelatinous
      1. Pileus granular-floccose to white-furfuraceous. On fallen twigs, hazel nuts etc: Mycena adscendens
      2. Very small, white; growing on Juncus: Mycena oligophylla
  2. Stipe not rising from a basal disc
    1. Stipe bleeding when cut
      1. With watery, hyaline juice (or hardly none): Mycena abramsii
      2. Juice milky white: a) Mycena galopus or when black: b) Mycena leucogala
      3. Juice watery milky. Taste very bitter. On bark of broad-leaved trees: Mycena erubescens
      4. Juice brownish red; stipitipellis diverticulate: Mycena sanguinolenta
      5. Juice brownish red; stipitipellis smooth: Mycena haematopus
      6. Juice yellowish orange to orange-red; in Fagus woods: Mycena crocata

       

    2. Stipe not containing any fluid
      1. Pileus covered with a separable, gelatinous pellicle
        1. Small species, growing on bark of coniferous wood. The base of the stipe sky-blue: Mycena cyanorrhiza
        2. Larger species, with greenish to buish shades on pileus; stipe entirely white-puberulouse: Mycena amicta
        3. Pileus viscid, with yellowish colours: Mycena epipterygia
        4. Pileus viscid, with grey to brownish colours
          • Lamellae arcuate
          1. Growing under coniferous trees: Mycena vulgaris
          2. Growing in open grassland: Mycena agrestis
          • Lamellae ascending
          1. Growing in open grassland: Mycena pelliculosa
      2. Pileus devoid of a separable pellicle
        1. Pileus red, pink, orange or deep yellow
          1. Lamellar edge deep yellow to pale yellow
            1. lamellar edge deep yellow: Mycena oregonensis
            2. lamellar edge pale yellow: Mycena citrinomarginata
          2. Lamellar edge not deep yellow
            1. Entire fungus coloured more or less pinkish
              1. Odeur raphanoid; large species, growing on calcareous soil under Fagus or Quercus: Mycena rosea
              2. Odeur indistinctive, growing in coniferous woods: Mycena rosella
              3. Odeur indistinctive, tiny species growing on decaying ferns: Mycena pterigena
              4. Odeur indistinctive; pileus covered by a gelatinous layer; lamellar edge gelatinous; growing on decayed leaf sheaths of Juncus and Typha and stems of Scirpus in wet places: Mycena tubarioides
              5. Odeur indistinctive; not with gelatinous layers; growing on Scirpus and Carex: Mycena riparia
              6. Odeur indistinctive; on fallen, decaying leaves of Quercus: Mycena smithiana
            1. Pileus and stipe differently coloured
              1. Stipe pinkish to white
                1. Pileus orange-red to pink-salmon, with no traces of yellow: Mycena adonis
                2. Pileus pink-coral red to salmon, turning yellowish with age: Mycena floridula
              1. Stipe orange-yellow to citrine
                1. Pileus orange-red to orange to pale salmon with yellow margin: Mycena acicula

             

        2. Pileus white to cream. See next key

© Arne Aronsen 2002-2015