Observation 191238: Gyroporus castaneus (Bull.) Quél.
When: 2014-09-01
(46.36° 13.7038° 570m)

Notes: Code: Bot_831/2014_IMG6786

Habitat: modestly southeast inclined mountain slope, mixed forest, Fagus sylvatica and Picea abies dominant; overgrown slope scree, rocks and boulders, skeletal sandy 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 570 m (1.870 feet), alpine phytogeographical region.

Substratum: forest soil under Fagus sylvatica.

Place: Lower Trenta valley, between villages Soča and Trenta, below ‘Na melu’ place, East Julian Alps, Posočje, Slovenia EC

Comments: Gyroporus castaneus is an all over the world spread species, however, it is quite rare almost everywhere. It is usually found under Quercus sp. but occasionally appears also under other broadleaf trees including Fagus sylvatica.

Two pilei growing together; pileus dimension of the larger one 7.5×6 cm and diameter of the smaller one 4.5 cm; flesh firm and brittle, pores 2-3/mm; stipe of the larger fruit body 5 cm tall, hollow, split into two, brittle; taste mild, mushroomy, smell none; no discoloring when injured or bruised; trama white, very slowly discoloring to pale ochre-brown on the edges; SP faint, pale ocher, oac715 (questionable estimate).

Proposed Names

85% (1)
Eye3 Eyes3
Recognized by sight: Brittle, hollow stipe.
Used references: (1) Id’ed by Mr.Bojan Rot, www.gobenabovskem.com
(2) G. Kibby, British Boletes, Copyright Geoffrey Kibby (2011), p 22.
(3) J. Breitenbach, F. Kraenzlin, Eds., Fungi of Switzerland, Vol.3. Verlag Mykologia (2000), p 68.
(4) G.J. Krieglsteiner (Hrsg.), Die Grosspilze Baden-Württembergs, Band 2., Ulmer (2000), p 256.
(5) R. M. Dähncke, 1200 Pilze in Farbfotos, AT Verlag (2009), p 22.
(6) S. Buczacki, Collins Fungi Guide, Collins (2012), p 418.
Based on microscopic features: Hypha septa with clamps. Spores smooth. Dimensions: 8 [9.5 ; 10.1] 11.5 × 5 [5.8 ; 6] 6.8 microns; Q = 1.4 [1.6 ; 1.7] 1.9; N = 39; C = 95%; Me = 9.8 × 5.9 microns; Qe = 1.7. Basidia clavate. Dimensions: 24.3 [29.5 ; 32.6] 37.9 × 9.2 [11.5 ; 12.8] 15.1 microns:; Q = 2 [2.4 ; 2.7] 3.2; N = 19; C = 95%; Me = 31.1 × 12.1 microns; Qe = 2.6. Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil (spores); NEA 40x/0.65, magnification 400x (hypha, basidia), in water. AmScope MA500 digital camera.
Based on chemical features: Taste mild, mushroomy, smell none.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2014-12-02 18:40:52 CET (+0100)
Last modified: 2014-12-02 18:51:14 CET (+0100)
Viewed: 22 times, last viewed: 2016-10-31 17:34:15 CET (+0100)
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