Observation 194159: Mycena alba (Bres.) Kühner
When: 2014-12-07
(46.3554° 13.6986° 525m)

Notes: Code: Bot_853/2014_DSC5112

Habitat: alpine valley, river bank at the foot of steep north side of a mountain, locally almost flat terrain, calcareous ground, river bank vegetation mostly consisting of Salix eleagnos, Ostrya carpinifolia, Picea abies and some Fagus sylvatica; humid air and ground, partly sunny, exposed to direct rain; average precipitations ~ 3.000 mm/year, average temperature 7-9 deg C, elevation 525 m (1.720 feet), alpine phytogeographical region.

Substratum: growing in bark crevices of a live, standing, grown up Ostrya carpinifolia covered by liverworts (Frullania sp. or eventually Radula sp.), mosses and lichens.

Place: Lower Trenta valley, left bank of river Soča between villages Soča and Trenta, about 100 m downstream of the river bridge leading to the farmhouse ‘Matevž’, Trenta 3, East Julian Alps, Posočje, Slovenia EC.

Comment: Growing solitary in a group of more than 30 pilei all around a single tree trunk from 0.5 m to 1.8 m above ground level; pilei diameter 4 – 9 mm, stipe 5 – 8 mm long, diameter about 0.5 mm; flesh quite firm considering miniature size of fruit bodies; SP faint, most probably white.

Nikon D700/Nikkor Micro 105mm/f2.8

Proposed Names

85% (1)
Eye3 Eyes3
Recognized by sight: Cera small, round spores, in winter.
Used references: (1) J. Breitenbach, F. Kraenzlin, Eds., Fungi of Switzerland, Vol.3. Verlag Mykologia(1995), p 260.
(2) G.J. Krieglsteiner (Hrsg.), Die Grosspilze Baden-Württembergs, Band 3., Ulmer (2001), p 428.
(3) A. Poler, ed., Seznam gliv Slovenije (in Slovene) (Slovenian checklist of Fungi), 2nd Ed., Assoc. of Mycol. Soc. of Slovenia (1998), p 51.
(4) http://home.online.no/~araronse/Mycenakey/alba.htm
(5) http://www.museum-joanneum.at/...
Based on microscopic features: Spores smooth, globose to subglobose. Dimensions: 7 [7.7 ; 8] 8.8 × 5.7 [6.5 ; 6.8] 7.6 microns; Q = 1.1 [1.2] 1.3; N = 32; C = 95%; Me = 7.9 × 6.7 microns; Qe = 1.2. Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil; in water; live material. AmScope MA500 digital camera.
Based on chemical features: Taste poorly tested since the fungi are so small, apparently indistinctive; smell indistinctive.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2014-12-21 08:12:06 PST (-0800)
Last modified: 2014-12-21 08:15:51 PST (-0800)
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