Observation 35151: Melanoleuca cognata (Fr.) Konrad & Maubl. var. cognata

If mycorrhiza then with dwarf Salix sp. or eventually Bistrota vivipara, Dryas octopetala. Spore print crème.

Lat.: 46.44230 Long.: 13.64304
Code: Bot_381/2009-4249

Habitat: upland grassland, above tree-line, with dwarf Salix sp. species, slightly south inclined slope, full sun, fully exposed to precipitations, a windy place, precipitations ~ 3.000 mm/year, average temperature 1 – 3 deg C, elevation 2.000 m (6.600 feet), alpine phytogeographical region

Substratum: soil

Place: Mangart’s flats, near the beginning of the final road loop of Mt.Mangart alpine road, west of Mt. Mangart, 2.679 m (8,790 feet), East Julian Alps, Posočje, Slovenia EC

Nikon D70/ Nikkor Micro 105mm/f2.8

Species Lists


Motic B2-211A, magnification 1.000 x, oli, in water.
Motic B2-211A, magnification 1.000 x, oli, in water.

Proposed Names

57% (1)
Eye3 Eyes3
Recognized by sight
Used references: Ref.:
(0) Personal communication. Determined by Mr. Bojan Rot, http://www.gobenabovskem.si/
(1) M.Bon, Pareys Buch der Pilze, Kosmos (2005), p 164
(2) R.M.Daehncke, 1200 Pilze in Farbfotos, AT Verlag (2009), p 308
(3) D.Arora, Mushrooms Demystified, Ten Speed Press, Berkeley (1986), p 170
(4) http://www.grzyby.pl/gatunki/Melanoleuca_cognata.htm
(5) http://www.mushroomexpert.com/melanoleuca_cognata.html
Based on microscopic features: Spore dimensions: 8 (SD=0.4) x 5.7 (SD=0.4) micr., Q=1.4 (SD=0.08), n=33. Warted.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Found in September.
By: amadej trnkoczy (amadej)
2010-03-30 02:02:24 PDT (-0700)

Thank you Irene. Mr Bojan Rot, who determined my observation, explained me that M.cognata var. cognata grows mainly on mountain pastures and that it can be found during late summer and fall to the contrary to ‘usual’ M.cognata which grows mainly in spring and early summer. Slovenian name of M.cognata is Zgodnja gostolistka that means Early Melanoleuca. Aurora has ‘..it grows nearly everywhere..’ but explicitly mentions ‘… under conifers…’ , which was why I thought it could be a mycorrhiza species.

The genus Melanoleuca
By: Irene Andersson (irenea)
2010-03-30 00:53:31 PDT (-0700)

is saprobic, as far as I know. I usually find cognata on roadsides, in lawns, and composts of grass and herbs.
I didn’t know there were so many varieties described, perhaps it makes sense. This pale version with a clustered growth, reminds of one I once found during the winter on a deep compost pile.

Created: 2010-03-29 13:07:55 PDT (-0700)
Last modified: 2010-03-29 13:07:55 PDT (-0700)
Viewed: 169 times, last viewed: 2017-06-06 17:42:03 PDT (-0700)
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