Observation 32475: Tyromyces fissilis (Berk. & M.A. Curtis) Donk

When: 2009-08-20

Collection location: West of Bovec, East Julian Alps, Posočje, Slovenia [Click for map]

Who: amadej trnkoczy (amadej)

No specimen available

When photographed there was a complete wind still. The mushroom smoked like a hot wet rag in icy air. But to photograph the phenomenon was not easy. Spores in the air can be (barely) seen in picture no.75354, upper left corner. Spore print white.

Lat.: 46.33479 Long.: 13.53083
Code: Bot_372/2009-2395

Habitat: Mixed woodland, nearly flat ground, cretaceous clastic rock (flysh), partly rain protected by trees canopies, mostly in shade, average precipitations ~3.000 mm/year, average temperature 8-10 deg C, altitude 435 m (1.450 feet), alpine phytogeographical region.

Substratum: fallen rotten deciduous tree, probably Acer sp., partly debarked, covered with mosses.

Place: West of Bovec, near a trail from station A of Mt. Kanin cable car to village Plužna, East Julian Alps, Posočje, Slovenia EC

Comment: Spore dimensions proved that my initial determination is wrong. The pictures show Tyromyces fissilis. Many thanks to Dip.ing. of Forestry Gregor Podgornik, Natural History Center (NAC), Tolmin, Slovenia for determination. Spores are shown on Fig. 80946. Their measured dimensions and spore dimensions of some macroscopically similar fungi from literature are shown on Fig. 80947.

Nikon D70 / AF-S Nikkor 18-70mm/f3.5-4.5G ED / Nikkor Micro 105mm/f2.8

Species Lists


Motic B2-211A, magnification 1.000 x, oil, in water.

Proposed Names

28% (1)
Recognized by sight
Used references: A.Bernicchia, Polyporaceae s.l., Fungi Europaei 10, Edizioni Candusso (2005), p 536
D.Arora, Mushrooms Demystified, Ten Speed Press, Berkeley (1986), pp 598
85% (1)
Eye3 Eyes3
Recognized by sight
Used references: (1) Personal communication with Gregor Podgornik, NAC, Tolmin, Slovenia
(2) http://www.usask.ca/...
(3) http://www.rogersmushrooms.com/...
(4) http://www.mykonet.ch/...
(5) A.Bernicchia, Polyporaceae s.l., Fungi Europaei 10, Edizioni Candusso (2005), p 552
Based on microscopic features: Spore dimensions: 4.6 (SD=0,3) x 3.3 (SD=0,3) micr., Q= 1.42 (SD=0,10), n= 33.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Sorry, I was wrong.
By: amadej trnkoczy (amadej)
2010-03-23 14:39:53 CDT (-0400)

I was told (personal communication with Mr. Anton Poler) it is listed in the Check list of mushrooms of Slovenia but under another name – Aurantiporus fissilis, the only species in this genus found in Slovenia. It is a relatively rare species.

Apparently yes.
By: amadej trnkoczy (amadej)
2010-03-12 10:42:14 CST (-0500)

It is not listed in A. Poler, Ed., Seznam Gliv Slovenie (in Slovene) (Check list of mushrooms of Slovenia), Assoc. of Mycological Societies of Slovenia (1998). I will contact people who are just now preparing a new edition of the Check list. Bernicchia (2005) states ‘.. not very common …’ for Europe and N. America and ‘.. found only sporadically..’ for Italy (neighboring Slovenia).

Nice obs!
By: Irene Andersson (irenea)
2010-03-12 08:35:10 CST (-0500)

I suppose it’s rare in your area too?

Created: 2010-01-24 14:48:49 CST (-0500)
Last modified: 2010-01-24 14:48:49 CST (-0500)
Viewed: 393 times, last viewed: 2018-06-25 17:52:04 CDT (-0400)
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