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Trametes ochracea, syn.: Trametes multicolorSlo.: klobuasta ploskocevkaDat.: Jan. 5. 2012Lat.: 46.34538 Long.: 13.5643Code: Bot_587/2012_DSC2128 Habitat: South inclined mountain slope, broadleaf forest, calcareous ground, quite humid but relatively warm place, mostly in shade, partly protected from direct rain by tree canopies, average precipitations ~ 3.000 mm/year, average temperature 8-10 deg C, elevation 540 m (1.750 feet), alpine phytogeographical region.Substratum: dead, hanging (not lying on ground), thick branch of Corylus avellana; Tremella mesenterica and Panellus stipticus also present.Place: Bovec basin, at the foot of Mt. ukla, below Ravni Laz place, East Julian Alps, Posoje, Slovenia EC Comments: Growing in group of several pilei. Pileus across up to 5.5 cm (2.2 inch) by 4.3 cm (1.7 inch) and up to 15 mm thick (0.7 inch). Smell faint, unpleasant, acid, taste indistinctive. Flesh soft, leathery, and bendable. SP whitish, faint. Cups zonate, beige/ pail brown (oac 777), with somewhat darker brownish strips (oac748) and white margin, hymenium whitish-light ocher (oac857).Spore dimensions: 6.6 (SD = 0.5) x 2.6 (SD = 0.2) micr., Q = 2.6 (SD = 0.22), n = 30. Ref.:(1) G.J.Krieglsteiner (Hrsg.), Die Grosspilze Bade-Wrttembergs, Band 1., Ulmer (2000), p 588. (2) A.Bernicchia, Polyporaceae s.l., Fungi Europaei, Vol.10., Edizioni Candusso (2005), p 534. (3)
www.mycobank.org/mycotaxo.aspx .
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Trametes versicolor (L.) PilatTurkey Tail, DE: Schmetterlings-TrameteSlo.: pisana ploskocevkaDat.: Feb. 11. 2016Lat.: 46.36179 Long.: 13.704983Code: Bot_933/2016_DSC0355Habitat: Young, mixed forest and bushes, Fagus sylvatica, Picea abies, Ailanthus altissima, Fraxinus ornus, Ostrya carpinifolia, Corylus avellana dominant; overgrown former pasture; slightly inclined mountain slope, south aspect; shallow, skeletal, calcareous ground; relatively warm place; partly protected from direct rain by tree canopies; average precipitations ~ 3.000 mm/year, average temperature 7-9 deg C, elevation 610 m (2.000 feet), alpine phytogeographical region.Substratum: dead, still standing Fagus sylvatica trunkPlace: Lower Trenta valley, upper part of pastures belonging to the abandoned farm house Koc, Trenta 3, East Julian Alps, Posoje, Slovenia EC Comments: Trametes versicolor is a very common species. Several authors consider it as the most frequent decomposer of wood of deciduous trees. It almost always appears in large, sometimes very beautifully colored, colonies. But it is also a very variable species, particularly in colors of distinctly zonate pilei. Because of that confusion with other species of genus Trametes is quite possible. The best distinguishing traits of Trametes versicolor for me are very small pores (up to 5/mm) and a distinctive, but very thin dark brown line between context and tomentum in cross-section. But one should cut pilei with a very sharp knife, or better with a razor blade. In this way the line remains undamaged and clearly visible. Growing in a group of several hundreds of pilei; pilei dimensions up to 4.6 x 2.9 cm and up to 6(8) mm thick, pore layer 1.5(2.5) mm thick; taste distinct, unpleasant, on rotten something?; smell mild, mushroomy; pore density 43/cm (SD=5.3, n=8), SP whitish-beige, oac 851.Spores smooth. Dimensions; 5.3 [6.1 ; 6.4] 7.1 x 1.8 [2 ; 2.1] 2.4 microns; Q = 2.5 [2.9 ; 3.1] 3.5; N = 40; C = 95%; Me = 6.2 x 2.1 microns; Qe = 3. Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil, in water, aniline blue, in vivo. AmScope MA500 digital camera.Herbarium: Mycotheca and lichen herbarium (LJU-Li) of Slovenian Forestry Institute, Vena pot 2, Ljubljana, Index Herbariorum LJFRef.:(1) L. Ryvarden, I. Melo, Poroid fungi of Europe, Synopsis Fungorum 31., Fungiflora (2014), p 421. (2) A. Bernicchia, Polyporaceaes l., Fungi Europaei, Vol. 10., Edizioni Candusso (2005), p 537.(3) S. Buczacki, Collins Fungi Guide, Collins (2012), p 508.(4) R. Lueder, Grundkurs Pilzbestimmung, Quelle & Meyer (2008), p 341.(5) R. Phillips, Mushrooms, Macmillan (2006), p 317. (6) J. Breitenbach, F. Kraenzlin, Eds., Fungi of Switzerland, Vol.2., Verlag Mykologia (1986), p 268.
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Trametes gibbosa Lumpy BracketSlo.: grbasta ploskocevkaDate: Oct. 24. 2009Lat.: 46.3608 Long.: 13.70246Code: Bot_394/2009-0165Habitat: pasture near wood side, fairly flat, shallow, calcareous, southeast faced ground, full sun, fully exposed to rain, average precipitations ~3.000 mm/year, average temperature 6-8 deg C, elevation 610 m (2.000 feet), alpine phytogeographical region.Substratum: cut down stump of Fagus Sylvatica, partly still in bark.Place: Trenta valley, middle part of Na Melu place, south-east slopes of Mt. Bavki Grintavec, 2.347 m (7.701 feet), East Julian Alps, Posoje, Slovenia ECRef:A.Bernicchia, Polyporaceae s.l., Fungi Europaei 10, Edizioni Candusso (2005), p 527M.Bon, Pareys Buch der Pilze, Kosmos (2005), p 318R.Lueder, Grundkurs Pilzbestimmung, Quelle & Mayer (2008), p 336
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Trametes pubescens (Schumach.: Fr.) Pilt, syn.: Coriolus pubescens (Schumach.: Fr.) Murr.DE: Samtige TrameteSlo.: puhasta ploskocevkaDat.: Nov. 17. 2015Lat.: 46.40365 Long.: 13.74211Code: Bot_927/2015_DSC9883Habitat: mixed wood, Fagus sylvatica, Picea abies, dominant trees with some Larix decidua and Fraxinus excelsior; steep mountain slope, west aspect, however in shade of mountains during winter months; rather cool and humid place; calcareous ground; partly protected from direct rain by tree canopies; average precipitations ~ 3.000 mm/year, average temperature 5 - 6 deg C, elevation 790 (2.600 feet), alpine phytogeographical region.Substratum: large, very old Fagus sylvatica, the tree is still alive, but fungus is growing on partly dead part of it, still in bark.Place: Zadnja Trenta valley; at the border of Forest reserve Kukla; about 100 m southwest of the memorial of Dr. Julius Kugy, poet and mountaineer of Julian Alps; near switchback no.48 of Vri alpine road, East Julian Alps, Posoje, Slovenia EC.Comments: This find has posed very interesting challenges for determination. Several options have been considered but apparently none fit to the find. Experts have been consulted but no definite solution found. Finally a sample has been sent to Dr. Leif Ryvarden, University of Oslo who determined it as Trametes pubescens. Many thanks to all involved in the problem solving - Dr. Nikica Ogris and Andrej Piltaver, Slovenian Forestry Institute, Bojan Rot, Bovec, Branko Vrhovnik, Horjul and specially to Prof. Ryvarden for his final determination.The main source of identification problems is probably very untypical shape of the pilei. Trametes pubescens has usually relatively thin pilei. According to the key of genus Trametes given in Krieglsteiner (2000), p585 the pilei are about 0.5 (1) cm thick, Ryvarden (2014), p417 states: "... Basidiocarps thin ... context up to 5 mm ... pore layer up to 4 mm thick..." and Bernicchia (2005), p535 gives " ... context 3-5 mm and pore layer 1-5 mm thick... ". The pilei found were up to 5 cm thick and in most cases triquetrous in cross-section. Also spores are significantly longer than normally expected.Growing in a few groups on the same part of a large tree; altogether more than 200 pilei present; majority of them laterally confluent, imbricate, some single; some effuse-reflexed, most of them triquetrous in cross-section; pilei dimensions: 8-10(16) x 4-5(6.5) cm and 2.5-5 cm thick; pore layer up to 8 mm thick; context of very low specific weight, corky, similar to dry Piptoporus betulinus; when dry quite firm, brittle, brakes to pieces; smell (of almost dry pilei) very mild but distinctive on what? ; taste indistinctive at the beginning, after a while mild and interesting, again on what?; 5% KOH reaction on context and pileus surface yellow-ocher with orange tint, on pores the same color but less distinctive; SP scarce, but distinctive (after making pilei moist and at 18-20 deg C), whitish-beige, oac851; fungi causing white root according to analysis of the wood made at the Forestry Institute of Slovenia.Spore dimensions determined twice from SP of different pilei. First measurement (pilei taken on Nov. 18. 2015): 7 [7.8; 8] 8.8 x 2 [2.4; 2.5] 2.9 microns; Q = 2.6 [3.2; 3.4] 3.9; N = 49; C = 95%; Me = 7.9 x 2.4 microns; Qe = 3.3. Second measurement (pilei taken on Nov. 23. 2015): 6.1 [7.3; 7.6] 8.9 x 2 [2.3; 2.4] 2.8 microns; Q = 2.5 [3.1; 3.2] 3.9 ; N = 62 ; C = 95%; Me = 7.5 x 2.4 microns; Qe = 3.2. Basidia clavate, dimensions: 14.2 [15.8; 17.7] 19.4 x 4.1 [5; 6.1] 7 microns; Q = 2.3 [2.8; 3.3] 3.8; N = 8; C = 95%; Me = 16.8 x 5.5 microns; Qe = 3.1. Hyphal system trimitic. Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil, in water, aniline blue; in vivo. AmScope MA500 digital camera.Herbarium: Mycotheca and lichen herbarium (LJU-Li) of Slovenian Forestry Institute, Vena pot 2, Ljubljana, Index Herbariorum LJFRef.:(1) Id'ed by Dr. Leif Ryvarden, University of Oslo.(2) G.J. Krieglsteiner (Hrsg.), Die Grosspilze Baden-Wrttembergs, Band 1., Ulmer (2000), p 589.(3) L. Ryvarden, I. Melo, Poroid fungi of Europe, Synopsis Fungorum 31., Fungiflora (2014), p 417. (4) A. Bernicchia, Polyporaceae s.l., Fungi Europaei, Vol. 10., Edizioni Candusso (2005), p 535. (5) S. Buczacki, Collins Fungi Guide, Collins (2012), p 509.
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Trametes hirsutaHairy Bracket, Striegelige TrameteSlo.: kosmata ploskocevkaDate: Oct. 25. 2009Lat.: 46.33474 Long.: 13.49412Code: Bot_395/2009-0231Habitat: A clearing in mixed wood, predominantly Fagus sylvatica and Picea abies, south oriented, moderately steep mountain slope, calcareous ground, partly sunny, exposed to direct rain, average precipitations ~3.000 mm/year, average temperature 6-8 deg C, elevation 950 m (3.100 feet), alpine phytogeographical region.Substratum: cut off decaying branches of Fagus sylvatica Place: Lower Gozdec wood, south slopes of Mt. Kanin mountain group, East Julian Alps, Posoje, Slovenia ECComment: Younger pore surface is more whitish to creamy.Ref.:Personal communication Mr. Gregor Podgornik, NAC, Tolmin, SloveniaA.Bernicchia, Polyporaceae s.l., Fungi Europaei 10, Edizioni Candusso (2005), p 529M.Bon, Pareys Buch der Pilze, Kosmos (2005), p 318R.Lueder, Grundkurs Pilzbestimmung, Quelle & Mayer (2008), p 340
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Doonan, Queensland, Australia
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Hobro Skov, Kirkedalsbækken, Danmark
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Mushroom Observer Image 837310: Trametes villosa (Sw.) Kreisel
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Mushroom Observer Image 1026400: Trametes versicolor (L.) Lloyd
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Mushroom Observer Image 76468: Trametes gibbosa (Pers.) Fr.
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Trametes ochracea, syn.: Trametes multicolorSlo.: klobuasta ploskocevkaDat.: Jan. 5. 2012Lat.: 46.34538 Long.: 13.5643Code: Bot_587/2012_DSC2128 Habitat: South inclined mountain slope, broadleaf forest, calcareous ground, quite humid but relatively warm place, mostly in shade, partly protected from direct rain by tree canopies, average precipitations ~ 3.000 mm/year, average temperature 8-10 deg C, elevation 540 m (1.750 feet), alpine phytogeographical region.Substratum: dead, hanging (not lying on ground), thick branch of Corylus avellana; Tremella mesenterica and Panellus stipticus also present.Place: Bovec basin, at the foot of Mt. ukla, below Ravni Laz place, East Julian Alps, Posoje, Slovenia EC Comments: Growing in group of several pilei. Pileus across up to 5.5 cm (2.2 inch) by 4.3 cm (1.7 inch) and up to 15 mm thick (0.7 inch). Smell faint, unpleasant, acid, taste indistinctive. Flesh soft, leathery, and bendable. SP whitish, faint. Cups zonate, beige/ pail brown (oac 777), with somewhat darker brownish strips (oac748) and white margin, hymenium whitish-light ocher (oac857).Spore dimensions: 6.6 (SD = 0.5) x 2.6 (SD = 0.2) micr., Q = 2.6 (SD = 0.22), n = 30. Ref.:(1) G.J.Krieglsteiner (Hrsg.), Die Grosspilze Bade-Wrttembergs, Band 1., Ulmer (2000), p 588. (2) A.Bernicchia, Polyporaceae s.l., Fungi Europaei, Vol.10., Edizioni Candusso (2005), p 534. (3)
www.mycobank.org/mycotaxo.aspx .
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Tikal, Peten, Guatemala
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Trametes gibbosa Lumpy BracketSlo.: grbasta ploskocevkaDate: Oct. 24. 2009Lat.: 46.3608 Long.: 13.70246Code: Bot_394/2009-0165Habitat: pasture near wood side, fairly flat, shallow, calcareous, southeast faced ground, full sun, fully exposed to rain, average precipitations ~3.000 mm/year, average temperature 6-8 deg C, elevation 610 m (2.000 feet), alpine phytogeographical region.Substratum: cut down stump of Fagus Sylvatica, partly still in bark.Place: Trenta valley, middle part of Na Melu place, south-east slopes of Mt. Bavki Grintavec, 2.347 m (7.701 feet), East Julian Alps, Posoje, Slovenia ECRef:A.Bernicchia, Polyporaceae s.l., Fungi Europaei 10, Edizioni Candusso (2005), p 527M.Bon, Pareys Buch der Pilze, Kosmos (2005), p 318R.Lueder, Grundkurs Pilzbestimmung, Quelle & Mayer (2008), p 336
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Trametes pubescens (Schumach.: Fr.) Pilt, syn.: Coriolus pubescens (Schumach.: Fr.) Murr.DE: Samtige TrameteSlo.: puhasta ploskocevkaDat.: Nov. 17. 2015Lat.: 46.40365 Long.: 13.74211Code: Bot_927/2015_DSC9883Habitat: mixed wood, Fagus sylvatica, Picea abies, dominant trees with some Larix decidua and Fraxinus excelsior; steep mountain slope, west aspect, however in shade of mountains during winter months; rather cool and humid place; calcareous ground; partly protected from direct rain by tree canopies; average precipitations ~ 3.000 mm/year, average temperature 5 - 6 deg C, elevation 790 (2.600 feet), alpine phytogeographical region.Substratum: large, very old Fagus sylvatica, the tree is still alive, but fungus is growing on partly dead part of it, still in bark.Place: Zadnja Trenta valley; at the border of Forest reserve Kukla; about 100 m southwest of the memorial of Dr. Julius Kugy, poet and mountaineer of Julian Alps; near switchback no.48 of Vri alpine road, East Julian Alps, Posoje, Slovenia EC.Comments: This find has posed very interesting challenges for determination. Several options have been considered but apparently none fit to the find. Experts have been consulted but no definite solution found. Finally a sample has been sent to Dr. Leif Ryvarden, University of Oslo who determined it as Trametes pubescens. Many thanks to all involved in the problem solving - Dr. Nikica Ogris and Andrej Piltaver, Slovenian Forestry Institute, Bojan Rot, Bovec, Branko Vrhovnik, Horjul and specially to Prof. Ryvarden for his final determination.The main source of identification problems is probably very untypical shape of the pilei. Trametes pubescens has usually relatively thin pilei. According to the key of genus Trametes given in Krieglsteiner (2000), p585 the pilei are about 0.5 (1) cm thick, Ryvarden (2014), p417 states: "... Basidiocarps thin ... context up to 5 mm ... pore layer up to 4 mm thick..." and Bernicchia (2005), p535 gives " ... context 3-5 mm and pore layer 1-5 mm thick... ". The pilei found were up to 5 cm thick and in most cases triquetrous in cross-section. Also spores are significantly longer than normally expected.Growing in a few groups on the same part of a large tree; altogether more than 200 pilei present; majority of them laterally confluent, imbricate, some single; some effuse-reflexed, most of them triquetrous in cross-section; pilei dimensions: 8-10(16) x 4-5(6.5) cm and 2.5-5 cm thick; pore layer up to 8 mm thick; context of very low specific weight, corky, similar to dry Piptoporus betulinus; when dry quite firm, brittle, brakes to pieces; smell (of almost dry pilei) very mild but distinctive on what? ; taste indistinctive at the beginning, after a while mild and interesting, again on what?; 5% KOH reaction on context and pileus surface yellow-ocher with orange tint, on pores the same color but less distinctive; SP scarce, but distinctive (after making pilei moist and at 18-20 deg C), whitish-beige, oac851; fungi causing white root according to analysis of the wood made at the Forestry Institute of Slovenia.Spore dimensions determined twice from SP of different pilei. First measurement (pilei taken on Nov. 18. 2015): 7 [7.8; 8] 8.8 x 2 [2.4; 2.5] 2.9 microns; Q = 2.6 [3.2; 3.4] 3.9; N = 49; C = 95%; Me = 7.9 x 2.4 microns; Qe = 3.3. Second measurement (pilei taken on Nov. 23. 2015): 6.1 [7.3; 7.6] 8.9 x 2 [2.3; 2.4] 2.8 microns; Q = 2.5 [3.1; 3.2] 3.9 ; N = 62 ; C = 95%; Me = 7.5 x 2.4 microns; Qe = 3.2. Basidia clavate, dimensions: 14.2 [15.8; 17.7] 19.4 x 4.1 [5; 6.1] 7 microns; Q = 2.3 [2.8; 3.3] 3.8; N = 8; C = 95%; Me = 16.8 x 5.5 microns; Qe = 3.1. Hyphal system trimitic. Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil, in water, aniline blue; in vivo. AmScope MA500 digital camera.Herbarium: Mycotheca and lichen herbarium (LJU-Li) of Slovenian Forestry Institute, Vena pot 2, Ljubljana, Index Herbariorum LJFRef.:(1) Id'ed by Dr. Leif Ryvarden, University of Oslo.(2) G.J. Krieglsteiner (Hrsg.), Die Grosspilze Baden-Wrttembergs, Band 1., Ulmer (2000), p 589.(3) L. Ryvarden, I. Melo, Poroid fungi of Europe, Synopsis Fungorum 31., Fungiflora (2014), p 417. (4) A. Bernicchia, Polyporaceae s.l., Fungi Europaei, Vol. 10., Edizioni Candusso (2005), p 535. (5) S. Buczacki, Collins Fungi Guide, Collins (2012), p 509.
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Trametes hirsutaHairy Bracket, Striegelige TrameteSlo.: kosmata ploskocevkaDate: Oct. 25. 2009Lat.: 46.33474 Long.: 13.49412Code: Bot_395/2009-0231Habitat: A clearing in mixed wood, predominantly Fagus sylvatica and Picea abies, south oriented, moderately steep mountain slope, calcareous ground, partly sunny, exposed to direct rain, average precipitations ~3.000 mm/year, average temperature 6-8 deg C, elevation 950 m (3.100 feet), alpine phytogeographical region.Substratum: cut off decaying branches of Fagus sylvatica Place: Lower Gozdec wood, south slopes of Mt. Kanin mountain group, East Julian Alps, Posoje, Slovenia ECComment: Younger pore surface is more whitish to creamy.Ref.:Personal communication Mr. Gregor Podgornik, NAC, Tolmin, SloveniaA.Bernicchia, Polyporaceae s.l., Fungi Europaei 10, Edizioni Candusso (2005), p 529M.Bon, Pareys Buch der Pilze, Kosmos (2005), p 318R.Lueder, Grundkurs Pilzbestimmung, Quelle & Mayer (2008), p 340
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Ingliston, Victoria, Australia
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Hobro Skov, Kirkedalsbækken, Danmark
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Mushroom Observer Image 853748: Trametes villosa (Sw.) Kreisel
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Mushroom Observer Image 10856: Trametes versicolor (L.) Lloyd
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Mushroom Observer Image 790191: Trametes elegans (Spreng.) Fr.
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2021.11.01 Tali, Helsinki, Finland
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Trametes versicolor (L.) PilatTurkey Tail, DE: Schmetterlings-TrameteSlo.: pisana ploskocevkaDat.: Feb. 11. 2016Lat.: 46.36179 Long.: 13.704983Code: Bot_933/2016_DSC0355Habitat: Young, mixed forest and bushes, Fagus sylvatica, Picea abies, Ailanthus altissima, Fraxinus ornus, Ostrya carpinifolia, Corylus avellana dominant; overgrown former pasture; slightly inclined mountain slope, south aspect; shallow, skeletal, calcareous ground; relatively warm place; partly protected from direct rain by tree canopies; average precipitations ~ 3.000 mm/year, average temperature 7-9 deg C, elevation 610 m (2.000 feet), alpine phytogeographical region.Substratum: dead, still standing Fagus sylvatica trunkPlace: Lower Trenta valley, upper part of pastures belonging to the abandoned farm house Koc, Trenta 3, East Julian Alps, Posoje, Slovenia EC Comments: Trametes versicolor is a very common species. Several authors consider it as the most frequent decomposer of wood of deciduous trees. It almost always appears in large, sometimes very beautifully colored, colonies. But it is also a very variable species, particularly in colors of distinctly zonate pilei. Because of that confusion with other species of genus Trametes is quite possible. The best distinguishing traits of Trametes versicolor for me are very small pores (up to 5/mm) and a distinctive, but very thin dark brown line between context and tomentum in cross-section. But one should cut pilei with a very sharp knife, or better with a razor blade. In this way the line remains undamaged and clearly visible. Growing in a group of several hundreds of pilei; pilei dimensions up to 4.6 x 2.9 cm and up to 6(8) mm thick, pore layer 1.5(2.5) mm thick; taste distinct, unpleasant, on rotten something?; smell mild, mushroomy; pore density 43/cm (SD=5.3, n=8), SP whitish-beige, oac 851.Spores smooth. Dimensions; 5.3 [6.1 ; 6.4] 7.1 x 1.8 [2 ; 2.1] 2.4 microns; Q = 2.5 [2.9 ; 3.1] 3.5; N = 40; C = 95%; Me = 6.2 x 2.1 microns; Qe = 3. Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil, in water, aniline blue, in vivo. AmScope MA500 digital camera.Herbarium: Mycotheca and lichen herbarium (LJU-Li) of Slovenian Forestry Institute, Vena pot 2, Ljubljana, Index Herbariorum LJFRef.:(1) L. Ryvarden, I. Melo, Poroid fungi of Europe, Synopsis Fungorum 31., Fungiflora (2014), p 421. (2) A. Bernicchia, Polyporaceaes l., Fungi Europaei, Vol. 10., Edizioni Candusso (2005), p 537.(3) S. Buczacki, Collins Fungi Guide, Collins (2012), p 508.(4) R. Lueder, Grundkurs Pilzbestimmung, Quelle & Meyer (2008), p 341.(5) R. Phillips, Mushrooms, Macmillan (2006), p 317. (6) J. Breitenbach, F. Kraenzlin, Eds., Fungi of Switzerland, Vol.2., Verlag Mykologia (1986), p 268.
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Trametes gibbosa Lumpy BracketSlo.: grbasta ploskocevkaDat.: Feb. 13. 2012Lat.: 46.32669 Long.: 13.52188Code: Bot_596/2012_DSC2715 Habitat: Old alluvial terrace of River Soa, flat terrain, former pasture, now light bush land, calcareous ground, fairly sunny and warm, exposed to direct rain, average precipitations ~ 3.000 mm/year, average temperature 8-10 deg C, elevation 400 m (1.300 feet), alpine phytogeographical region.Substratum: two stumps of a cut down small Fraxinus sp. (probably F. ornus) trees in initial stage of disintegration. Place: Bovec basin, south of Bovec golf play ground, East Julian Alps, Posoje, Slovenia EC Comments: Growing on two stumps, several large pileus of different age, pileus diameter up to 22 cm (8 inch), sterile surface white to beige, old caps overgrown with algae and mosses, context white, not zonate, pore surface white, light straw color on older pilei; SP faint, white. Pictures taken at below 0 deg C temperature and after a prolonged period of very cold weather (icy days with minimum temperatures -10 deg C (14 deg F)).Spores smooth. Dimensions: 4.4 (SD = 0.4) x 2.3 (SD = 0.2) micr., Q = 1.88 (SD = 0.21), n = 25. Ref.:(1) G.J.Krieglsteiner (Hrsg.), Die Grosspilze Bade-Wrttembergs, Band 1, Ulmer (2000), p 585. (2) A.Bernicchia, Polyporaceae s.l., Fungi Europaei, Vol. 10., Edizioni Candusso (2005), p 527. (3) R.Phillips, Mushrooms, Macmillan (2006), p 317. (4) M.Bon, Pareys Buch der Pilze, Kosmos (2005), p 318.
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Trametes pubescens (Schumach.: Fr.) Pilt, syn.: Coriolus pubescens (Schumach.: Fr.) Murr.DE: Samtige TrameteSlo.: puhasta ploskocevkaDat.: Nov. 17. 2015Lat.: 46.40365 Long.: 13.74211Code: Bot_927/2015_DSC9883Habitat: mixed wood, Fagus sylvatica, Picea abies, dominant trees with some Larix decidua and Fraxinus excelsior; steep mountain slope, west aspect, however in shade of mountains during winter months; rather cool and humid place; calcareous ground; partly protected from direct rain by tree canopies; average precipitations ~ 3.000 mm/year, average temperature 5 - 6 deg C, elevation 790 (2.600 feet), alpine phytogeographical region.Substratum: large, very old Fagus sylvatica, the tree is still alive, but fungus is growing on partly dead part of it, still in bark.Place: Zadnja Trenta valley; at the border of Forest reserve Kukla; about 100 m southwest of the memorial of Dr. Julius Kugy, poet and mountaineer of Julian Alps; near switchback no.48 of Vri alpine road, East Julian Alps, Posoje, Slovenia EC.Comments: This find has posed very interesting challenges for determination. Several options have been considered but apparently none fit to the find. Experts have been consulted but no definite solution found. Finally a sample has been sent to Dr. Leif Ryvarden, University of Oslo who determined it as Trametes pubescens. Many thanks to all involved in the problem solving - Dr. Nikica Ogris and Andrej Piltaver, Slovenian Forestry Institute, Bojan Rot, Bovec, Branko Vrhovnik, Horjul and specially to Prof. Ryvarden for his final determination.The main source of identification problems is probably very untypical shape of the pilei. Trametes pubescens has usually relatively thin pilei. According to the key of genus Trametes given in Krieglsteiner (2000), p585 the pilei are about 0.5 (1) cm thick, Ryvarden (2014), p417 states: "... Basidiocarps thin ... context up to 5 mm ... pore layer up to 4 mm thick..." and Bernicchia (2005), p535 gives " ... context 3-5 mm and pore layer 1-5 mm thick... ". The pilei found were up to 5 cm thick and in most cases triquetrous in cross-section. Also spores are significantly longer than normally expected.Growing in a few groups on the same part of a large tree; altogether more than 200 pilei present; majority of them laterally confluent, imbricate, some single; some effuse-reflexed, most of them triquetrous in cross-section; pilei dimensions: 8-10(16) x 4-5(6.5) cm and 2.5-5 cm thick; pore layer up to 8 mm thick; context of very low specific weight, corky, similar to dry Piptoporus betulinus; when dry quite firm, brittle, brakes to pieces; smell (of almost dry pilei) very mild but distinctive on what? ; taste indistinctive at the beginning, after a while mild and interesting, again on what?; 5% KOH reaction on context and pileus surface yellow-ocher with orange tint, on pores the same color but less distinctive; SP scarce, but distinctive (after making pilei moist and at 18-20 deg C), whitish-beige, oac851; fungi causing white root according to analysis of the wood made at the Forestry Institute of Slovenia.Spore dimensions determined twice from SP of different pilei. First measurement (pilei taken on Nov. 18. 2015): 7 [7.8; 8] 8.8 x 2 [2.4; 2.5] 2.9 microns; Q = 2.6 [3.2; 3.4] 3.9; N = 49; C = 95%; Me = 7.9 x 2.4 microns; Qe = 3.3. Second measurement (pilei taken on Nov. 23. 2015): 6.1 [7.3; 7.6] 8.9 x 2 [2.3; 2.4] 2.8 microns; Q = 2.5 [3.1; 3.2] 3.9 ; N = 62 ; C = 95%; Me = 7.5 x 2.4 microns; Qe = 3.2. Basidia clavate, dimensions: 14.2 [15.8; 17.7] 19.4 x 4.1 [5; 6.1] 7 microns; Q = 2.3 [2.8; 3.3] 3.8; N = 8; C = 95%; Me = 16.8 x 5.5 microns; Qe = 3.1. Hyphal system trimitic. Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil, in water, aniline blue; in vivo. AmScope MA500 digital camera.Herbarium: Mycotheca and lichen herbarium (LJU-Li) of Slovenian Forestry Institute, Vena pot 2, Ljubljana, Index Herbariorum LJFRef.:(1) Id'ed by Dr. Leif Ryvarden, University of Oslo.(2) G.J. Krieglsteiner (Hrsg.), Die Grosspilze Baden-Wrttembergs, Band 1., Ulmer (2000), p 589.(3) L. Ryvarden, I. Melo, Poroid fungi of Europe, Synopsis Fungorum 31., Fungiflora (2014), p 417. (4) A. Bernicchia, Polyporaceae s.l., Fungi Europaei, Vol. 10., Edizioni Candusso (2005), p 535. (5) S. Buczacki, Collins Fungi Guide, Collins (2012), p 509.