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Dermoloma josserandii var. josserandii
Josserand's Crazed Cap ?
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Photographer: Dr. Amadej Trnkoczy
ID: 0000 0000 1115 3640 (2015-11-28)Copyright © 2015 Dr. Amadej Trnkoczy
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INFORMATION PROVIDED WITH THE PHOTO
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date of photo Oct 22, 2015
latitude 46.40476 longitude 13.70917
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location
Zadnja Trenta valley, 60 m northwest of the final parking place of the access road, Zapodn place, East Julian Alps (Posočje, Slovenia)notes Slo.: Josserandova žametovka ? - syn.: Dermoloma josserandii Denis & Orton, Dermoloma hygrophorus Joss (?) - Habitat: light mixed alpine forest, dominant trees Picea abies and Fagus sylvatica, about 30 m inside the forest bordering to an abandoned alpine pasture; ground vegetation mostly mosses, Oxalis acetosella, scattered Cyclamen purpurascens, Helleborus niger, Luzula sp., young Fagus sylvatica; cohabiting with Mycena epipterygia; flat terrain, calcareous ground; mostly in shade, humid place; protected from direct rain by tree canopies; average precipitations ~ 3.000 mm/year, average temperature 5-7 deg C, elevation 960 m (3.150 feet), alpine phytogeographical region. Substratum: forest soil, under Picea abies, possibly mycorrhizal also with Fagus sylvatica. Comments: Two possible options have been proposed during discussions about this find - Melanoleuca exscissa and Dermoloma hygrophorus/Dermoloma josserandii. Both mushrooms are very similar. Measured spore dimensions fit to both. However, the pilei found seem somewhat smaller then of Melanoleuca exscissa, lack relatively short stipe compared to pilei diameter, have less crowded gills (L = 54) than Melanoleuca exscissa (L = 60 - 95, Ref.: 2) and spores doesn't have verrucose spore surface. Therefore Dermoloma seems a better fit. - Names Dermoloma hygrophorus and Dermoloma josserandii are treated as synonyms by some authors (Ref.:4), while Index Fungorum and MycoBank threat both names as separate species. Dermoloma josserandii is known in two varieties Dermoloma josserandii var. josserandii with whitish-beige cap and Dermoloma josserandii var. phaeopodium with dark brown cap (Refs.: 2 and 4 and MycoBank). However, Index Fungorum treats Dermoloma josserandii var. josserandii only as a synonym of Dermoloma josserandii. Anyway, the find with its fruitbody dimensions, spore size, minutely granular cap, somewhat twisted, tapering downward and silky lined stem fits best to Dermoloma josserandii var. josserandii as described Ref.2. - Three fruit bodies found; from 1.8 to 4.2 cm in diameter, stipe 6 to 7 cm long and 3.5 to 8 mm in diameter; gills L = 54 (the largest pileus); taste distinctive, unpleasant, rancid and slightly bitter; smell distinctive, pleasant; SP very faint, possibly whitish, oac color could not be determined. - Spores dimensions: 5.9 [7.4; 8] 9.6 x 3.7 [4.6; 4.9] 5.8 microns; Q = 1.3 [1.6; 1.7] 1.9; N = 36; C = 95%; Me = 7.7 x 4.7 microns; Qe = 1.6. Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil, in water. AmScope MA500 digital camera. Herbarium: Mycotheca and lichen herbarium (LJU-Li) of Slovenian Forestry Institute, Večna pot 2, Ljubljana, Index Herbariorum LJF Ref.: (1) Personal communications with Mr. Anton Poler, Mr. Bojan Rot (www.gobenabovskem.com), Mr. Slavko Šerod (Forum http://www.gobe.si/forum/) and Mr. Branko Vrhovec, Horjul. (2) S. Buczacki, Collins Fungi Guide, Collins (2012), p 178 and 210. (3) J. Breitenbach, F. Kraenzlin, Eds., Fungi of Switzerland, Vol.3. Verlag Mykologia (1991), p 246.(4) G.J. Krieglsteiner (Hrsg.), Die Grosspilze Baden-Württembergs, Band 3., Ulmer (2001), p 241 and 366.camera Nikon D700/Nikkor Micro 105mm/f2.8
contributor's ID # Bot_922/2015_DSC9586 photo category: Fungi - fungi
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MORE INFORMATION ABOUT THIS FUNGUS
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Josserand's Crazed Cap ? (photographer)
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