NO NAME!

Slo.: lenikova golobica - Habitat: Open mixed forest, flat terrain, under a Picea abies, among mosses and Picea needles; calcareous bedrock but possibly somewhat acid soil, fairly humid place, in total shade, partly protected from direct rain by tree canopies, average precipitations ~ 3.000 mm/year, average temperature 7-9 deg C, elevations 650 m (2.100 feet), alpine phytogeographical region. - Substratum: soil. - Comments: Determination uncertain. Experts disagree about this determination. It can be also Russula ochroleuca based on cup color and lack of stem chambers. Read discussion at http://mushroomobserver.org/59089?q=36Py . Description: Growing solitary, pileus diameter about 7 cm (2.7 inch); taste and smell mild; flesh firm; SP light ocher; cap skin peeling easily. Spore dimensions: warty, 8.5 (SD = 0.5) x 7.2 (SD = 0.3) micr., Q = 1,2 (SD = 0.06), n = 30. Motic B2-211A, magnification 1.000 x, oil, in water. Ref.: (0) Personal communication. Id'ed by Mr. Anton Poler. (1) R.M. Daehncke, 1200 Pilze in Farbfotos, AT Verlag (2009), p 850. (2) M.Bon, Parey's Buch der Pilze, Kosmos (2005), p 78. (3) http://www.grzyby.pl/gatunki/Russula_ochroleuca.htm . (4) http://www.rogersmushrooms.com/gallery/DisplayBlock~bid~6042~source~gallerychooserresult.asp . (5) R.M. Daehncke, 1200 Pilze in Farbfotos, AT Verlag (2009), p 860. (6) M.Bon, Parey's Buch der Pilze, Kosmos (2005), p 56. (7) R.Lueder, Grundkurs Pilzbestimmung, Quelle & Meyer (2008), p 177. (8) http://www.grzyby.pl/gatunki/Russula_mustelina.htm .

Slo.:osmojena golobica - Habitat: Mixed forest, almost flat terrain, probably acid ground (Lycopodium agg.,Vaccinium myrtillus) on calcareous bedrock, humid place, in deep shade, partly protected from direct rain by tree canopies, average precipitations ~ 3.000 mm/year, average temperature 5-7 deg C, elevation 960m (3.150 feet), alpine phytogeographical region. - Substratum: forest soil. - Comments: Truly not one of the beautifully colored Brittlegills. However, still fun to find it since it is almost always well hidden under fallen leaves and other ground litter usually in deep shade. A good example of 'mimicry'. Growing in groups, several pilei, several almost totally covered by fallen beach leaves. Diameter up to 12 cm (5 inch); taste mild, smell indistinctive, earthy; flesh brittle but quite strong; SP pale yellow-ochre, oac894; peeling of cuticle modest. - Spores warty. Dimensions:8.1(SD= 0.6) x 7.1 (SD= 0.5) μ, Q= 1.14 (SD= 0.06), n= 30. 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) R.M. Daehncke, 1200 Pilze in Farbfotos, AT Verlag (2009), p 841. (2) R. Phillips, Mushrooms, Macmillan (2006), p 47. (3) S. Buczacki, Collins Fungi Guide, Collins (2012), p 296. (4) Personal communication with Mr. Bojan Rot, www.gobenabovskem.si

Slo.: uhati drhtave - Habitat: trail side, among herbs, under trees and bushes, in shade, humid place close to a stream, flat terrain, calcareous ground, partly protected from direct rain by shrub and tree canopies, average precipitations ~ 3.000 mm/year, average temperature 8-10 deg C, elevation 370 m (1.200 feet), alpine phytogeographical region. - Substratum: soil full of leaf and wood debris. - Comments: Growing in several groups with many sporocarps and solitary, pileus diameter up to 5 cm (2 inch) and up to 7 cm (3 inch) tall, taste and smell mild and pleasant, flesh soft rubbery, SP whitish. Spore dimensions do not fit well to data from literature? However, scatter of this character among different authors is very large. Spores smooth. Dimensions: 8.8 (SD = 0.6) x 5.5 (SD = 0.4) micr., Q = 1.61 (SD = 0.15), n = 30. Motic B2-211A, magnification 1.000 x, oil, in water. - Ref.: (1) M.Bon, Parey's Buch der Pilze, Kosmos (2005), p 324. (2) R.Phillips, Mushrooms, Macmillan (2006), p 350. (3) D.Arora, Mushrooms Demystified, Ten Speed Press, Berkeley (1986), p 972. (4) R.Lueder, Grundkurs Pilzbestimmung, Quelle & Meyer (2008), p 143. (5) R.M. Daehncke, 1200 Pilze in Farbfotos, AT Verlag (2009), p 1071.

Slo.: ? Habitat: Light mixed karst forest and bushes, predominantly oak, stony ground, limestone, shaded by tree canopies, N oriented, cca. 1 m above ground, partly protected from rain, precipitations 1.500 -1.600 mm/year, average temperature 10-12 deg C, altitude 280 m (920 feet), submediterranean phytogeographical region. Substratum: partly debarked rotten trunk of a thick Hedera helix climbing a Quercus petraea and cut at the bottom by men.

Slo.: puhasta ploskocevka - syn.: Coriolus pubescens (Schumach.: Fr.) Murr. - Habitat: 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. 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 LJF Ref.: (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.

Slo.: donk, uhelj, uhati drhtavez

Slo.: Queletova golobica - Habitat: Young dense patch of Picea abies stand within predominantly Fagus sylvatica forests, south incline mountain slope, calcareous ground, no ground vegetation, shallow soil layer, warm place but total shade; partly protected from direct rain by tree canopies; average precipitations ~ 3.000 mm/year, average temperature 5-7 deg C, elevations 920 m (3,000 feet), alpine phytogeographical region. - Substratum: forest soil, almost certainly mycorrhiza with Picea abies. - Comments: Growing in loose group of several species; pileus diameter 8(10) cm, (3(4) inch), taste burning, smell fresh but not strong, flesh brittle, SP crme, pileus cuticle doesn't peel easily (the mushrooms were quite dry). - Spore dimensions: Warty, 8,0 (SD = 0,4) x 7,2 (SD = 0,4) micr., Q = 1,13 (SD = 0,04), n = 30. Motic B2-211A, magnification 1.000 x, oil, in water. - Ref.: (1) R.M. Daehncke, 1200 Pilze in Farbfotos, AT Verlag (2009), p 923 (2) http://www.terra.hu/gomba/html/russula_queletii.html (3) http://www.nahuby.sk/atlas-hub/Russula-queletii/Plavka-Queletova/Holubinka-Queletova/ID465 (4) http://www.pilz-baden.ch/galerie/queletii.html (5) Personal communication; determined by Mr. Bojan Rot, www.gobenabovskem.si and Mr. Anton Poler.

Slo.: mecesnova mlečnica - Habitat: mountain pasture with scattered groups of Larix decidua and Picea abies trees, full sun, modestly inclined mountain slope, exposed to direct rain, average precipitations ~ 2.600 mm/year, average temperature 6-8 deg C, elevation 870 m (2.850 feet), alpine phytogeographical region. - Substratum: soil, under Larix decidua. - Comments: Growing scattered solitary and in groups; several pilei present.This mushroom grows mostly in the Alps and is strictly growing under Larix decidua trees. Is it edible or not seems questionable. In the literature one can find everything - from delicious, edible, conditionally edible to not edible. Pileus diameter up to 9 cm, stipe 4-5 cm and 1.2 - 1.4 cm diameter; smell distinctive, fresh, pleasant, like fruit jam; taste mild, pleasant, like nuts; flesh brittle; SP very faint, whitish(?); milk white, not abundant, not changing color for a long time. - Spores warty. Dimensions: 9.2 (SD = 0.8) x 7.5 (SD = 0.5) μ, Q = 1.22 (SD = 0.07), n = 19. 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 communication with Mr. Gregor Podgornik. (2) M. Bon, Parey's Buch der Pilze, Kosmos (2005), p 82. (3) A. Poler, Veselo po gobe (in Slovene), Mohorjeva druba Celovec (2002), p 246 (4) R.Lueder, Grundkurs Pilzbestimmung, Quelle & Meyer (2008), p 194.

Slo.: belkasta kostenelka - Habitat: Mixed wood, predominantly broad leaved trees and bushes, flat terrain, in shade, cretaceous clastic rock (flysh) bedrock, quite humid place, partly protected from direct rain by tree canopies, average precipitations ~ 3.000 mm/year, average temperature 8-10 deg C, elevation 440 m (1.450 feet), alpine phytogeographical region. - Substratum: Dead Corylus avelana branch lying on ground, partly rotten but still in bark, about 4 cm in diameter. - Comments: Growing solitary, young specimen, pileus length about 5 cm (2 inches), quite strong 'mushroomy' smell, flesh leathery, SP faint, may be whitish? When found completely snow white, after two days (when photographed) somewhat beige. Extremely dense and small pores up to 12 pores/mm. Spore smooth, very small; hence measurements unreliable (with my equipment). Dimensions: 3.4 (SD = 0.4) x 0.7 (SD = 0.1) micr., Q = 5.43 (SD = 1.15), n = 22. Motic B2-211A, magnification 1.000 x, oil, in water. - Ref.: (1) A.Bernicchia, Polyporaceae s.l., Edizioni Candusso (2005), p 315. (2) http://www.mycobank.org/MycoTaxo.aspx?Link=T&Rec=323593 (3) http://www.funghiitaliani.it/index.php?showtopic=39403 (4) R.Phillips, Mushrooms, Macmillan (2006), p 510.

Slo.: rjasti lepozob - Habitat: Mixed wood, predominantly Fagus sylvatica and Picea abies, in shade, protected from direct rain by tree canopies, calcareous ground, average precipitations ~3.000 mm/year, average temperature 6-8 deg C, elevation 990 m (3.250 feet), alpine phytogeographical region. - Substratum: Decomposing tree litter and soil among roots of an old Picea abies - Ref.: http://www.mycobank.org/MycoTaxo.aspx?Link=T&Rec=100986 - G. Pace, Vse o gobah (in Slovene), Mladinska Knjiga (1997), p300

Slo.: okata bjerkandera - Habitat: Light mixed wood with some ground vegetation, flysh bedrock, flat terrain, mostly in shade, average precipitations ~3.000 mm/year, average temperature 8-10 deg C, elevation 440 m (1.450 feet), alpine phytogeographical region. - Substratum: fallen, to some degree rotten, trunk of a deciduous tree, overgrown with mosses. - Comment: Many fruit bodies. These are young specimens. Odor 'mushroomy'. Basidiocarps annual. Spores were not obtained. Thanks to Irene Andersson, MushroomObserver.com for identification. Identification is not completely certain. - Ref.: (1) Personal communication Irene Andersson, MushroomObserver.com (2) A.Bernicchia, Polyporaceae s.l., Fungi Europaei 10, Edizioni Candusso (2005), p 141 (3) D.Arora, Mushrooms Demystified, Ten Speed Press, Berkeley (1986), p 596 (4) http://www.naturspaziergang.de/Pilze.htm (5) http://www.bioimages.org.uk/html/r157182.htm

Lactarius xanthogalactus, commonly known as the yellow-staining milkcap is a poisonous species of fungus in the family Russulaceae and found in Sonoma County.

Slo.: bukova mlenica - syn.: Lactarius viridis (Schrader) Quel. - Habitat: Mixed wood, Fagus sylvatica dominant, Picea abies scattered; slightly inclined mountain slope, southeast aspect; calcareous, colluvial, shallow ground; relatively warm and dry place; partly protected from direct rain by tree canopies; average precipitations ~ 3.000 mm/year, average temperature 6 - 9 deg C, elevation 665 m (2.180 feet), alpine phytogeographical region. Substratum: forest soil, Fagus sylvatica leaf litter. Comments: Lactarius blennius is not showy mushroom. It is of pale, grayish, greenish, brownish colors, which are in addition quite variable. The species is common and keeps with Fagus sylvatica (in mycorrhizal relation) in almost the whole region there this tree thrives. Experts are able to resolve two varieties of this species: Lactarius blennius var. blennius and Lactarius blennius var. fluens. I was unable to assign this find to one of them. Following the key of Section 6 of Lactarius (Ref.: 2, p383) this should be Lactarius blennius var. blennius based on piled dimension (3 - 7 cm for var. blennius contrary to 5 - 12 cm for var. fluens) or Lactarius blennius var. fluens based on strong production of milk (even in quite dry state!). Also variable hut color speaks for this variety. On the other hand, the absence of lighter, almost whitish hut edge speaks in favor of the first option. The only reliable microscopic trait (Ref.:8) - thickness of ixocutis - could not be used because of quite dry fruitbodies. Also, if one reads the description of both varieties in Ref. 9 the text is almost identical and the associated drawings definitely are such. Description of the find: six or seven pilei present in an area of about 4 x 3 m; pilei diameter 4.5 - 7 cm, surface almost dry, only slightly sticky (found after a long period of dry weather) but leaf debris firmly stuck to the hut surface speaking in favor of presence of a distinctive ixocutis; trama and gills of about the same thickness; milk instant, abundant, white, after a longer time, when almost dry, it becomes greenish-gray; gills bruise slowly and mildly darken to brownish, otherwise the fruitbodies do not discolor when handled; stipe 3.5 - 4.6 cm long, 9 to 12 mm in diameter; only minutely sticky; smell mild, pleasant, on fruits(?); taste first mild then distinctly burning but not very strongly; milk has the same taste; SP abundant, light beige with slight yellow tint, oac851. Spores with coarse ridges. Dimensions: (6,5) 7,1 - 8,2 (8,5) x (5,9) 6 - 6,8 (7,1) microns; Q = (1) 1,1 - 1,2 (1,4); N = 35; Me = 7,6 x 6,5 microns; Qe = 1,2; Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil (spores); in water, spore ornamentation in Melzer, fresh material. AmScope MA500 digital camera. Herbarium: Mycotheca and lichen herbarium (LJU-Li) of Slovenian Forestry Institute, Vena pot 2, Ljubljana, Index Herbariorum LJF Ref.: (1) J. Breitenbach, F. Kraenzlin, Eds., Fungi of Switzerland, Vol.6. Verlag Mykologia (2005), p 50. (2) G.J. Krieglsteiner (Hrsg.), Die Grosspilze Baden-Wrttembergs, Band 2., Ulmer (2000), p 387. (3) M. Bon, Parey's Buch der Pilze, Kosmos (2005), p 86. (4) L. Hagar, Ottova Encyklopedia Hb, Ottova Nakladatelstvi, Praha (2015) (in Slovakian), p 424. (5) R. Lueder, Grundkurs Pilzbestimmung, Quelle & Meyer (2008), p 196. (6) R.M. Daehncke, 1200 Pilze in Farbfotos, AT Verlag (2009), p 958. (7) R. Phillips, Mushrooms, Macmillan (2006), p 56. (8) J. Heilmann-Clausen, A. Verbeken, J. Vesterholt, The genus Lactarius, Fungi of Northern Europe Vol.2. (1998), p 287 S. (9) S. Buczacki, Collins Fungi Guide, Collins (2012), p 288.

Slo.: olta lisika, olta trobenta - syn.: Cantharellus aurora (Batsch) Kuyper, Cantharellus infundibuliformis var. tubiforis (Schaeff.) Maire, Cantharellus tubaeformis var. lutescens Fr., Helvella tubaeformis Schaeff. - Habitat: light mixed wood edge, Picea abies, Fagus sylvatica, Larix decidua, Salix eleagnos dominant trees; slightly inclined mountain slope, north aspect; calcareous, colluvial, skeletal ground; in half shade; partly protected from direct rain by tree canopies, average precipitations ~ 3.000 mm/year, average temperature 3-5 deg C, elevation 1.005 m (3.400 feet), alpine phytogeographical region. Substratum: moss covered soil under young Picea abies trees. Comments: Craterellus lutescens is generally considered as quite rare mushroom. It is in strong decline in many countries of Europe since it is very sensitive to air emissions by traffic and agriculture. It is protected by law in Slovenia. However, in Trenta valley the species is still quite common. It usually appears in large colonies having several tens of fruitbodies. Growing scattered in a large group of more than 30 fruitbodies; pilei diameter up to 7 cm, stipe up to 10 cm long and 2.1 cm in diameter; smell distinctive, fresh, typical on chanterelles, pleasant; taste mild, pleasant; flesh brittle, fibrous; SP yellowish, oac6. Uredba o zavarovanih prostoiveih vrstah gliv, Uradni list RS, t. 58/2011 (Regulation of protected wild fungi, Official Gazette of Republic Slovenia, no. 58/2011), (2011). Spores smooth. Dimensions: 9,7 [10,6 ; 11,1] 12,1 x 6,4 [7,4 ; 7,8] 8,8 microns; Q = 1,3 [1,4 ; 1,5] 1,6; N = 30; C = 95%; Me = 10,9 x 7,6 microns; Qe = 1,4. Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil; fresh material, in water. AmScope MA500 digital camera. Herbarium: Mycotheca and lichen herbarium (LJU-Li) of Slovenian Forestry Institute, Vena pot 2, Ljubljana, Index Herbariorum LJF Ref.: (1) J. Breitenbach, F. Kraenzlin, Eds., Fungi of Switzerland, Vol.123456. Verlag Mykologia (1986), p 370. (2) R. Phillips, Mushrooms, Macmillan (2006), p 273. (3) S. Buczacki, Collins Fungi Guide, Collins (2012), p 450. (4) G.J. Krieglsteiner (Hrsg.), Die Grosspilze Baden-Wrttembergs, Band 2., Ulmer (2000), p 8. (5) M. Bon, Parey's Buch der Pilze, Kosmos (2005), p 306.

Slo.: rumeni jeek - syn.: Dentium repandum - Habitat: Mixed wood, predominantly Fagus sylvatica and Picea abies, in shade, protected from direct rain by tree canopies, calcareous nearly flat ground, average precipitations ~3.000 mm/year, average temperature 6-8 deg C, elevation 990 m (3.250 feet), alpine phytogeographical region. Substratum: Forest soil among roots of an old Picea abies. - Comment: Probably mycorrhizal with Picea abies. Spore dimension: 6.0 x 6.6 micr, n=1. It fits to data in the refferences (1), (2), (6) and (7), but not with (4) and (5). - Ref.: (1)http://www.rogersmushrooms.com/gallery/DisplayBlock~bid~6126~source~gallerychooserresult.asp (2) http://www.mushroomexpert.com/hydnum_repandum.html (3) G. Pace, Vse o gobah (in Slovene), Mladinska Knjiga (1997), p 298. (4) M.Bon, Pareys Buch der Pilze, Kosmos (2005), p 312. (5) R.M.Daehncke, 1200 Pilze in Farbfotos, AT Verlag (2009), p 1036. (6) R.Lueder, Grundkurs Pilzbestimmung, Quelle & Mayer (2008), p 420. (7) D.Arora, Mushrooms Demystified, Ten Speed Press, Berkeley (1986), pp 618.

Slo.: pepelasti zvitoluknjiar - (syn.: Daedalea unicolor) - Habitat: Pasture land, southeast oriented slopes, full sun, precipitations ~3.000 mm/year, average temperature 8-10 deg C, elevation 550 m (1.800 feet), alpine phytogeographical region. Substratum: dead trunk of a small Ostrya carpinifolia laying on ground. - Comment: See an interesting story of the Cerrena unicolor, the Horntail Wasp Tremex Columba and the Ichneumonid wasp Megarhyssa at http://www.mushroomthejournal.com/mma/SC200304.html#cerrena - Ref.: A.Bernicchia, Polyporaceae s.l. in Italia, Instituto di Patologia Vegetale, Uni. degli Studi di Bologna (1990), pp458. http://www.messiah.edu/Oakes/fungi_on_wood/poroid%20fungi/species%20pages/Cerrena%20unicolor.htm

Slo.: ametasta slojevka - Habitat: South inclined mountain slope, mostly broadleaf forest, calcareous ground, quite humid but 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 505 m (1.650 feet), alpine phytogeographical region. - Substratum: dead trunk of a cut off broadleaf tree, lying on ground, quite rotten but still mostly in bark. On the same log also Fomitopsis pinicola. - Comments: According to Ref.:(2) S. subtomentostum has no acanthohyphydia in the hymenium while similar S. ostrea has them (Ref.:(2), p335 and key on p.356). I was unable to find them in spite of the fact that they should be quite large (>100 x 5-10 micr. Ref.:(1)). There was no bleeding observed probably because of fairly dry state of the fruitbodies and weather. Average day temperatures about 0 deg C with -5 degC during the night. - Pileus dimensions up to 9 x 5 cm (3.5 x 2 inch), 1 mm or less thick. Smell indistinctive. Cup upper surface rusty-red-brown (oac700), hymenium dull brown-red (oac700), trama of wood color, with thin (~ 0,1 mm) brown upper layer and about 0.4 mm thick hymenial layer. - Spore dimensions: 6.6 (SD = 0.6) x 2.6 (SD = 0.2) micr., Q = 2.58 (SD = 0.2), n = 30. Motic B2-211A, magnification 1.000 x, oil, in water. Congo red. - Ref.: (1) G.J.Krieglsteiner (Hrsg.), Die Grosspilze Bade-Wrttembergs, Band 1, Ulmer (2000), p339. (2) http://www.mycobank.org/MycoTaxo.aspx?Link=T&Rec=339694 . (3) Personal communication with Mr. Anton Poler. (4) http://www.mycoquebec.org/bas.php?trie=S&l=l&nom=Stereum subtomentosum / Stre tomenteux&tag=Stereum subtomentosum&gro=7 . (5) http://users.skynet.be/deneyer.mycology/ . (6) http://www.svims.ca/council/Stereu.htm#nSpe .