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Ganoderma resinaceum; Lacquered Bracket   

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Ganoderma resinaceum
Ganoderma resinaceum
Lacquered Bracket
Photographer: Dr. Amadej Trnkoczy

ID: 0000 0000 1215 2209 (2015-12-17)

Copyright © 2015 Dr. Amadej Trnkoczy

  • date of photo  Aug 23, 2015
  • latitude 46.36092   longitude 13.70162     View on Google Maps.
  • location   Lower Trenta valley, right bank of river Soča, between villages Soča and Trenta, below of 'Na melu' place; south of cottage Trenta 2b, East Julian Alps (Posočje, Slovenia)
  • notes   Slo.: smolena pološčenka - Habitat: Alpine pasture; moderately incline mountain slope; southeast aspect; calcareous, stony, colluvial ground; shallow soil layer; full sun, dry and relatively warm place; exposed to direct rain; average precipitations ~ 3.000 mm/year, average temperature 7-9 deg C, elevation 625 m (2.050 feet), alpine phytogeographical region. Substratum: at the base of dead stump of a stand alone, cut down, mostly decorticated Ostrya carpinifolia. Comments: According to keys of genus Ganoderma published in Ryvarden (2014) and Bernicchia (2005) this find fits well to Ganoderma resinaceum. It has distinctly stipitate pileus, continuous, partly shiny and reddish-brown (not dark brown and dull as with Ganoderma applanatum and Ganoderma australe) resinous crust, which first melts and then burns with a yellow flame when heated at the tip of a knife in the flame of a match and a darker line in context just above tube layer. However, some traits not mentioned in the keys pose problems. The context color doesn't seem to correspond well to the descriptions in Ryvarden (2014) and Krieglsteiner (2000) ('pale grayish-brown') and Bernicchia (2005) ('brown, red-brown'). The find was found on dead stump of Ostrya carpinifolia (host species not listed as a possible substrate in the literature available to me) while Ganoderma resinaceum is known from live deciduous trees. Measured spores are slightly too long and too wide in average compared to most published data (the only exception is Ref.: 4). Their width fits better to similar Ganoderma pfeifferi, which is apparently always sessile and never stipitate. Measured spore dimensions actually fit perfectly to Ganoderma carnosum, which is, however, know only from conifers. Also the habitat of the find seems strange. Ganoderma resinaceum is usually found in parks, roadsides, seldom in woods. All this makes my determination uncertain to some extent. Growing solitary; pileus dimensions 10 x 8 cm; oozing reddish droplets when cut, pore layer bruising brown when handled; trama fibrous-corky and very firm, difficult to cut even with a ceramic knife; taste bitter, smell distinctive, pleasant, a kind of mushroomy; SP faint, possibly brown. Spores brown, rough, thick (double) walled. Dimensions: 11.4 [12.2 ; 12.6] 13.5 x 6.9 [7.5 ; 7.8] 8.5 microns; Q = 1.4 [1.6 ; 1.7] 1.8; N = 30; C = 95%; Me = 12.4 x 7.7 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) L. Ryvarden, I. Melo, Poroid fungi of Europe, Synopsis Fungorum 31., Fungiflora A/S (2014), p 191. (2) A. Bernicchia, Polyporaceaes l., Fungi Europaei, Vol. 10., Edizioni Candusso (2005), p 238. (3) G.J. Krieglsteiner (Hrsg.), Die Grosspilze Baden-Württembergs, Band 1., Ulmer (2000), p 427. (4) J. Breitenbach, F. Kraenzlin, Eds., Fungi of Switzerland, Vol.2. Verlag Mykologia (1986), p 332. (5) S. Buczacki, Collins Fungi Guide, Collins (2012), p 486.
  • camera   Nikon D700/Nikkor Micro 105mm/f2.8
  • contributor's ID #  Bot_908/2015_DSC8633
  • photo category: Fungi - fungi

  • common names   Lacquered Bracket (photographer)
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    Using this photo   The thumbnail photo (128x192 pixels) on this page may be freely used for personal or academic purposes without prior permission under the Fair Use provisions of US copyright law as long as the photo is clearly credited with © 2015 Dr. Amadej Trnkoczy. For other uses, or if you have questions, contact Dr. Amadej Trnkoczy amadej.trnkoczy[AT] (Replace the [AT] with the @ symbol before sending an email.)


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