Key to the European species of section Filipedes

In Mycena sect. Filipedes 36 species are known fom Europe. They are Mycena albidoaquosipes Robich, Mycena aphanes Aronsen & Gulden, M. arcangeliana Bres., M. caesiolivida Bres., M. cicognanii Robich, M. chlorantha (Fr.) P. Kumm., M. dobraensis Robich & Hauskn., M. eburneopileata Robich, M. erianthi-ravennae Robich & Marchetti, M. favrei Maas Geest., M. filopes (Bull.) P. Kumm., M. flavescens Vel., M. flavofuliginosa Robich, M. fuscoaquosipes Robich, M. graminicola Robich, M. limonia Maas Geest., M. malafidensis Robich, M. metata (Fr.) P. Kumm., M. mirata (Peck) Sacc., M. parvistrobilicola Robich, M. peyerimhoffii Maire, M. phoenicis-canariensis Robich, M. pinastri Robich, M. pinus-rigidae Robich, M. pseudolaevigata Kalamees, M. rapiolens Favre, M. rebaudengi Robich, M. rhododendri Robich, M. secessa Robich, M. septentrionalis Maas Geest., M. tenuicorticola Robich, M. tenuipes Robich, M. ticinensis Robich, M. truncimuscicola Robich, M. urania (Fr.) Quél., M. xantholeuca Kühner.

Nine of these species have been reported from Norway: M. aphanes, M. arcangeliana, M. chlorantha. M. filopes, M. flavescens, M. metata, M. mirata, M. septentrionalis, and M. urania.

Mycena alexandri Singer is a North American species reported from alpine sites in Europe. Aronsen & Gulden (2007) believed that the Norwegian material was different from M. alexandri and it was given the new name M. aphanes.

Of the 34 European species 20 have been described recently by Robich (2003 a, 2003 b, 2004 b, 2005, 2006 a, 2006 b, 2006 c, 2009 a, 2009 b, 2010 a, 2010 b) and Robich & Hausknecht 2008. The new taxa were obviously based on only one collection or rather limited material. I find it difficult to have an opinion on whether they are acceptable species or not, but most of them are not included in the key below. The section is in great need of extensive phylogenetic investigations.


1. Pileus pure white to somewhat yellowish, or cream to citrine or ochraceous, the centre not brownish. Stipe not brownish, nor suffused with bluish or violaceous shades
2. Stipe white or watery white or whitish grey to grey
3. Lamellae reaching the stipe numbering 8-15, odour absent or indistinctive: white form of M. mirata
3. Lamellae reaching the stipe more than 30, odour of iodoform on drying out or indistinctive or somewhat farinaceous
4. Pileus greenish yellow, olive yellow, olive-grey, cream grey with yellow tint. Pleurocystidia present: M. erianthi-ravennae
4. Pileus yellowish white, greyish with yellow tint, ochraceous grey. Pleurocystidia absent: M. xantholeuca
2. Stipe dingy citrine. Pileus dingy citrine to ochaceous.
5. Hyphae of the pileipellis diverticulate: M. peyerimhoffii
5. Hyphae of the pileipellis smooth: M. limonia
1. Differently characterized
6. Stipe with long microscopic hairs 2-3,5 µm wide: M. rebaudengi
6. Stipe not with long hairs
7. Stipe bluish, bluish grey, violaceous grey to steel blue, at least below and at least in younger stages
8. Pileus with a pronounced yellow to yellowish olive shade, at least at the margin. Odour of iodoform when drying out: M. arcangeliana
8. Differently characterized. Odour not of iodoform
9. Pileus bluish, bluish grey, violaceous grey.
10. Stipe 0.5 - 1 mm wide. Lamellae adnate to somewhat uncinate, at first white, turning bluish to pallid grey: M. urania
10. Stipe 3 - 4 mm wide. Lamellae almost free, at first white, turning pink to dingy flesh-colour: M. caesiolivida
9. Pileus not with bluish colours
11. Pileus with a pronounced yellow to yellowish olive shade, at least at the margin. Hyphae of the pileipellis 1.8 - 4.5 µm wide: M. arcangeliana
11. Pileus white to whitish, greyish brown at the centre. Lamellae white. Spores 6.3 - 7.0 µm long: M. pseudolaevigata
11. Pileus cream white, grey-white, clear grey. Hyphae of the pileipellis 3.5 - 20 µm wide: M. ticinensis
7. Stipe without bluish or violaceous colours, or, in some cases, only with a weak violaceous reflex
12. Lamellae reaching the stipe numbering 12 - 30
13. Spores cylindrical or ellipsoid
14. Odour strong when cut or crushed, of raw potatoes or of earth, or raphanoid, not of iodoform on drying out
15. Pileus yellowish-white, whitish, perl grey, greyish citrine, or more greyish brown, with or without a yellowish shade. Lamellae white with yellowish tint, the edge more or less pale yellow in young specimens. Odour strong, of raw potatoes, or of earth, or raphanoid: M. flavescens
15. Pileus grey, pale brown-grey to dark sepia brown. The lamellae white or grey-white or with a brownish tint. Odour raphanoid: M. rapiolens
14. Odour indistinct or of iodoform on drying out, or pungent aromatic.
16. Basidiomata with yellowish or greenish tints
17. Basidiomata typically growing on decayed wood. Lamellae tending to turn pinkish or flesh-colour with age. Odour of iodoform on drying out: M. arcangeliana
17. Differently characterized. Lamellae never turning pink.
18. Colour of the pileus tending towards greenish or olive green. Growing in coastal dunes on poor sandy soil: M. chlorantha
16. Basidiomata differently characterized
19. Cheilocystidia mostly covered with unevenly spaced, coarse, often curved, simple to branched excrescences
20. Pileus dark sepia brown to blackish brown. Odour of Pelargonium graveolens. Most cheilocystidia saccate or shaped like an hour-glass: M. septentrionalis
20. Pileus russet to tawny, turning more ochraceous with age. Odour of iodoform on drying out: M. aphanes
19. All cheilocystidia or the majority covered with evenly spaced, cylindrical, narrow excrescences
21. Pileus brown or greyish, often with pink tint. Cheilocystidia often stipitate. Hyphae of the stipe cortex mostly devoid of swollen terminal cells: M. metata
21. Pileus without pink tint. Cheilocystidia mostly sessile. Caulocystidia swollen, clavate or more variously shaped:............. M. filopes
13. Spores broadly ellipsoid to subglobose
22. Pileus and stipe red brown or dark brown: M. pinus-rigidae
22. Pileus clear grey-brown or cream grey. Stipe translucently grey: M. graminicola
12. Lamellae reaching the stipe numbering 12 - 16. 4-spored: M. favrei
12. Lamellae reaching the stipe numbering 8 - 15. Mostly 2-spored. Spores almost cylindrical: M. mirata



© Arne Aronsen 2002-2015