Code: Bot_463/2010_IMG2710 and Bot_464/2010_DSC5400

Habitat: mixed wood, Picea abies and Fagus sylvatica dominant trees; locally almost flat terrain, bottom of the valley; calcareous ground; almost in shade; partly protected from direct rain by tree canopies, average precipitations ~ 3.000 mm/year, average temperature 5-7 deg C, elevation 820 m (2.700 feet), alpine phytogeographical region.

Substratum: totally rotten, moss overgrown Picea abies stump.

Place: Lower Trenta valley, Zadnjica side-valley, near Stružnik place, next to the dirt road to the end of the valley, East Julian Alps, Posočje, Slovenia EC

Comments: Tricholomopsis rutilans can hardly be confused with other species in the field. Beautifully yellow-reddish colored mushroom has abundant and large (up to 140 microns long) cheilocystidia, which can be seen even without microscope with any magnifying glass. The mushroom is generally quite common although not in the Trenta valley. A single fruitbody has been found. Smell and taste mild, indistinct; SP white.

Nikon D700 / Nikkor Micro 105mm/f2.8 and Canon G11, 6.1-30mm/f2.8-4.5


Proposed Names

85% (1)
Recognized by sight: Beautifully yellow and reddish color, yellow gills with large cheilocystidia visible without microscope.
Used references: (1) Personal communication with Mr. Bojan Rot,
(2) (accessed Nov.9. 2017)
(3) J. Breitenbach, F. Kraenzlin, Eds., Fungi of Switzerland, Vol.3., Verlag Mykologia (1991), p 346.
(4) G.J. Krieglsteiner (Hrsg.), Die Grosspilze Baden-Württembergs, Band 3., Ulmer (2001), p 578.
(5) R.M. Daehncke, 1200 Pilze in Farbfotos, AT Verlag (2009), p 224.
(6) R. Phillips, Mushrooms, Macmillan (2006), p 98. 5
(7) M. Bon, Parey’s Buch der Pilze, Kosmos (2005), p 150. SP
Based on microscopic features: Spores smooth with one guttule. Dimensions: (6,1) 6,7 – 7,6 (8) x (4,8) 4,9 – 5,7 (6,1) microns; Q = (1,2) 1,3 – 1,4 (1,6); N = 30; Me = 7,1 × 5,4 microns; Qe = 1,3. Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil; in water; fresh material. AmScope MA500 digital camera.

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Created: 2017-11-11 15:49:40 CST (-0500)
Last modified: 2017-11-11 15:49:52 CST (-0500)
Viewed: 17 times, last viewed: 2019-09-04 03:10:49 CDT (-0400)
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