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Suillus-tridentinus_2

Image of <i>Suillus tridentinus</i> (Bres.) Singer 1945

Description:

Suillus tridentinus (Bres.) Sing., syn: Boletus tridentinus Bres.no name, DE: Rostroter Lrchen-RhrlingSlo.: tridentinska lupljivkaDat.: Oct. 2. 2016Lat.: 46.40383 Long.: 13.74545Code: Bot_1011/2016_DSC5338/5408Habitat: Steep mountain slope, southwest aspect, mixed forest, Fagus sylvatica, Picea abies dominant, with scattered Larix decidua trees; in shade, partly protected from direct rain by tree canopies; calcareous, skeletal ground; under thicket of young Picea abies and about 3-4 m from a large Larix decidua tree, however not directly under its canopy; average precipitations ~ 3.000 mm/year, average temperature 4-6 deg C, elevation 860 m (2.820 feet), alpine phytogeographical region.Substratum: soil.Place: Zadnja Trenta valley, next to the trail leading southeast from No. 48. switchback of alpine Vri pass road (Kugy's monument), before the trail passes Milnarica gorge, East Julian Alps, Posoje, Slovenia EC.Comments: This small but beautiful, orange-yellow bolete is widespread but in most regions a rare find. In Slovenia it was once protected and put on Red List. However, it is not listed in our last official document related to fungi protection from 2011. The reason is not known to me. This find is to my knowledge the second known one in the Upper Soa river region. Growing solitary. Relatively young fruitbody. Pileus diameter 4 cm, sticky surface; stipe 4.8 cm long, max diameter 15 mm, firm, not hollow; flesh firm, not bruising, after a day in the refrigerator slightly bluing; smell almost none; taste mild, mushroomy, pleasant; SP abundant, golden-yellow, oac852.Spores smooth. Dimensions: (9,4 [10,5 ; 10,9] 11,9 x 4,1 [4,4 ; 4,6] 4,9 microns; Q = 2,1 [2,3; 2,4] 2,7; N = 40; C = 95%; Me = 10,7 x 4,5 microns; Qe = 2,4. Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil, fresh material; in water. AmScope MA500 digital camera.Protected according to: Uredba o varstvu samoniklih gliv Uradni list RS, t. 57/1998, z dne 14. 8. 1998 (Regulation of protected wild growing fungi, Official Gazette of Republic Slovenia, no. 57/1998). Priloga 1. Red list, marked by R, denoting a rare species. Herbarium: Mycotheca and lichen herbarium (LJU-Li) of Slovenian Forestry Institute, Vena pot 2, Ljubljana, Index Herbariorum LJFRef.:(1) G. Kibby, British Boletes, Copyright Geoffrey Kibby (2011), p 37. (2) R. Phillips, Mushrooms, Macmillan (2006), p 294. (3) M. Bon, Parey's Buch der Pilze, Kosmos (2005), p 46.(4) S. Buczacki, Collins Fungi Guide, Collins (2012), p 414. (5) G.J. Krieglsteiner (Hrsg.), Die Grosspilze Baden-Wrttembergs, Band 2., Ulmer

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Amadej Trnkoczy
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