Observation 128103: Antrodia malicola (Berk. & M.A. Curtis) Donk
When: 2013-01-09
46.3266° 13.5221° 400m
No herbarium specimen
0 Sequences

Code: Bot_685/2013_IMG2269

Habitat: Former pasture, on top of a pile of firewood, flat terrain, calcareous ground, full sun, exposed to direct rain, average precipitations ~ 3.000 mm/year, average temperature 8-10 deg C, elevation 400 m (1.300 feet), alpine phytogeographical region.

Substratum: a cut down, dead, partly still in bark trunk of Ostrya carpinifolia (about 15 cm diameter) used as a weight and laying on a pile of firewood.

Place: Bovec basin, south of Bovec golf play ground, East Julian Alps, Posočje, Slovenia EC

Comments: I’ve browsed through a lot of literature without a really convincing determination of this observation. Basidiocarps’ habitus corresponds well to Hapalopilus crocerus, however measured spores do not fit. A potential candidate could also be a kind of Coriolopsis. Yet, spores of C. gallica fit well to the measured ones, but color of basidiocarps doesn’t at all. Color of the observation could eventually fit to C. trogii (Berk.) Dom. (syn: Trametes trogii) (considering young basidiocarps), but it has somewhat narrower spores and its substrate is usually Populus. sp. Ostrya carpinifolia is not cited as possible substrate in Ref.:(3). I was unable to find another so distinctly yellow-orange-ochre Polyporaceae with such spores.

Growing in a small group of about 5 basidiocarps, all effused-reflexed, up to about 10 cm wide, pilei up to 1 cm broad, pores 1-3 per mm, irregular, angular on horizontal surfaces; basidiocarps moist, rubbery-leathery, fresh, relatively soft; hard and firm when dry, all were apparently young or very young; trama brown-red (oac707), SP whitish-beige (oac007), quite abundant for Polyporaceae.

See also Comments.

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

Species Lists


Date: Jan. 24.2013
5% KOH reaction.
Date: Jan. 24.2013 Tube/‘gils’ wall.
Date: Jan. 24.2013 Basidia.
Date: Jan. 24.2013 Tube/‘gils’ wall.
Date: Jan. 24.2013 Trama hypha.
Date: Jan. 24.2013
Date: Jan. 24.2013
Date: Jan. 24.2013 White rot of the log.
Date: Jan. 24.2013 Completely resupinated form.

Proposed Names

1% (2)
Recognized by sight
Used references: (1) Personal communication, provisionally id’ed as Hapalopilus by Mr. Anton Poler.
(2) Personal communication, provisionally id’ed as Trametes trogii by Mr. Gregor Podgornik, NAC Tolmin.
(3) G.J.Krieglsteiner (Hrsg.), Die Grosspilze Bade-Württembergs, Band 1, Ulmer (2000), p 532 and 505.
(4) A.Bernicchia, Polyporaceae s.l., Fungi Europaei, Vol. 10., Edizioni Candusso (2005), p 256 and 190. Spores of Hapalopilus croceus 4-6.5/3-4.5 and of Coriolopsis trogii 7-11/2.5-4
(5) Jülich (cited by Ref.:1). Spores of Hapalopilus criceus 3-7/3-4,5
Based on microscopic features:
Spores smooth. Dimensions: 9.7 (SD = 0.8) x 4.1 (SD = 0.3) μ, Q = 2.35 (SD = 0.2), n = 30. Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil, in water. AmScope MA500 digital camera.
Based on chemical features: Smell strong, mushroomy; KOH 5% on flesh and pores very dark carmine red, almost black.
42% (3)
Recognized by sight
85% (1)
Eye3 Eyes3
Used references: Günter Sturm’s examination of herbarium specimen.

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Not familiar with the definition of “xanthochroic”
By: fotoculus
2015-03-16 07:24:14 CDT (-0400)

That there a reaction takes place should be clear, but how to term that is out of my expertise.

thank you fotoculus
By: Danny Newman (myxomop)
2015-03-16 06:50:23 CDT (-0400)

would you characterize these reactions as xanthochroic?

Jahn’s observation
By: fotoculus
2015-03-16 06:40:57 CDT (-0400)

Please look here: http://wwwuser.gwdg.de/~rjahn/Pilzbriefe/PB_Bd_10_23.pdf

I’don’t know A. alpina but I have tested my herbar samples:

A. serialis turns blackish brown
A. albida turns golden
A. sinuosa doesn’t change its tan color
A. vaillantii changes to blackish brown
A. ramentacea changes to brown blackish
A. xantha turns to golden yellow

All observed after some minutes of drying. It is an interesting result but at the moment I have not the time to go further on.

Kind regards
Günter Sturm

is this documented anywhere in print?
By: Danny Newman (myxomop)
2015-03-16 01:21:48 CDT (-0400)

and do you know of other Antrodia species with this reaction other than A. malicola and A. alpina?

KOH reaction has been described by Hermann Jahn
By: fotoculus
2015-03-15 06:38:09 CDT (-0400)

Please have a look on https://www.flickr.com/photos/fotoculus/16005999074/
Hermann Jahn was one of the world best polyporists has mentioned that reaction. If you like to get further information (in German) please google “Jahn Antrodia malicola”.

point of contention
By: Danny Newman (myxomop)
2015-03-14 19:40:06 CDT (-0400)

nowhere in the description of A. malicola in Rydarden’s Poroid Fungi of Europe is a KOH reaction mentioned.

Your Agreement
By: fotoculus
2014-01-31 05:30:29 CST (-0500)

Hallo Amadej,
I was thinking that you are dealing with other things. Because you’ve allowed me to post my comment, I have written this short opinion.I look forward that you agree with my classification.
Kind regards

Thank you
By: amadej trnkoczy (amadej)
2014-01-29 15:29:56 CST (-0500)

Thank you Gϋnter for your comment and work. I should update the information on MO based on your results sent to me privately, but I am getting slow. Sorry for that.

Microscopic examination yields Antrodia malicola
By: fotoculus
2014-01-29 13:21:02 CST (-0500)

Amadej sent me a little piece of his find. It is a polypore with clamped septa of the hyphae,dimitic system. I found a few Spores. All characteristics meets that species. Although Antrodia doesn’t belong to the Hymenochaetaceae A. malicola reacts with KOH by blackening, as Amadej has also already explored. We have about 20 finds here in the Rhine-Main-Area of Germany and I know it well. The main substrate is Fagus, but I have found it alson Carpinus and there it has a fine-aromatic smell.

Kind regards
Günter Sturm

spored dissapeared in two weeks?
By: amadej trnkoczy (amadej)
2013-03-17 08:38:33 CDT (-0400)

Thanks Gerhard for your explanation about the sporulation. What puzzled me was that I made several microskopic slides of ‘smashed’ pore layer from my second visit. Basidia were nicely visible but I was unable to find a single spore. Is it possible that all spores which were there on my first visit (if they didn’t origin somewhere else?) completely disappeared in two weeks? Shouldn’t be at least some of them still there?

I think it’s a wrong interpretation.
By: Gerhard Koller (Gerhard)
2013-02-13 14:30:32 CST (-0500)

I never considered this observation to be either this or that. But I cannot come to an ID though.
What I can say is that it is not surprising you didn’t find any spores. Polypores are known for this inconvenience. They only sporulate at a certain range of temperature and/or weather. If it is too dry you will not find spores. If it is too hot you will not find spores (in some species, others love it). If it is too cold you will certainly find no spores. I suppose the latter is the case with this.

some new info added
By: amadej trnkoczy (amadej)
2013-02-13 14:13:43 CST (-0500)

Two weeks after the first observation I went back to the place, took some additional pictures and samples and did some microscopy. I found several new fruit bodies (pictures added) as well as the old ones, which haven’t changed much in size and appearance. The new ones were on a different larger ~ 20 cm diameter log a few meters away of the first find on the same substratum.
This time I found also two fully resupinated basidiocarps.

To my big surprise, I was unable to find a single spore! I don’t know how this is possible. I scoped hypha of trama and tube layer and basidia. All following comparisons relate to information given in Ref.:(4). Trama hypha seems to be monomitic, a characteristics of H. croceus. I was unable to find any trace of trimitic hypha, which is characteristic to Coriolopsis trogii. Hypha is quite uniform, dense, thin-walled, rarely branched, which also corresponds to H. croceus. It has somewhat larger diameter (measured average value d=3.8μ, SD=0.5μ, n=30 and H.crocea = 3-6μ) than C. trogii (generative hypha d=2-3,5(4)). C. trogii has richly branched, thick-walled skeletal and binding hypha, which I was unable to find. Basidia dimensions (measured average l=25.8μ, SD=3.5μ and d=6.4μ SD=1.0μ, n=15) and lack of cystidia fit well to both species. Their shape is generally clavate (which fits to both species), but many are (double) flash shaped, which is not mentioned in the literature available to me. KOH 5% test on trama was again violent, dark red-black. Ref.:(4) states ‘carmine red’ for H. croceus and ‘unchangeable or only slightly darkening’ for C. trogii. H.croceus causes white root, which (I believe) is shown on one of the added pictures. I haven’t found this information for C. trogii.

On the other hand, both species should have hypha with clamps and also basidia should have basal clams. I haven’t found clams (poor microscopy?).

Re: substratum. Ref.:(4) and Ref.:(3) state Quercus sp./Castanea sp. for H. croceus and Populus sp./Salix sp. for C. trogii. In my observation it was almost certainly Ostrya carpinifolia, which seems to be closer to Quercus sp. from the stand point of wood properties (very heavy and hard, historically used to fashion plane soles).

I don’t know how to interpret this data due to my too short mycological ‘mileage’, some observations may be even wrong. What puzzle me are spores – wrong dimensions in the first visit and disappearance of them in the second and apparent absence of hypha clamps. Could this observation be something third? Comments appreciated.

found and described only three times
By: amadej trnkoczy (amadej)
2013-02-11 03:31:39 CST (-0500)

For your information, Hapalopilus croceus is protected in Slovenia from 2010 on and it is also listed in the Red list marked by E (highly endangered). It has been found and described only three times up to now according to data base of the Slovenian Institute of forestry.

As far as I know
By: Gerhard Koller (Gerhard)
2013-02-09 18:16:57 CST (-0500)

it is on the red list of many European countries. I think the only places where it is not rare seems to be Scandinavia.
Has never been found in Austria although we kept looking for it for decades and still do.

How rare, Gerhardt?
By: Danny Newman (myxomop)
2013-02-09 18:07:22 CST (-0500)

Is it on a red list anywhere?

Thanks Irene and Gerhard.
By: amadej trnkoczy (amadej)
2013-02-09 16:33:27 CST (-0500)

I went back to the place of this observation, I took some more pictures and did some microscopy, which I hope will eventually bring some additional light to this observation. Will come back after I process the pictures.

I’m puzzled too
By: Irene Andersson (irenea)
2013-02-09 03:13:14 CST (-0500)

- had expected much brighter colours on Hapalopilus croceus.
The size and shape of the spores, together with the pale fruitbodies make Coriolopsis trogii a better candidate.

By: Gerhard Koller (Gerhard)
2013-02-08 17:47:49 CST (-0500)

I do not believe this to be the ultra ultra ultra rare H. croceus. But I have to say I never found it myself till now.

Created: 2013-02-08 15:34:27 CST (-0500)
Last modified: 2014-01-29 15:33:04 CST (-0500)
Viewed: 602 times, last viewed: 2017-10-16 22:57:10 CDT (-0400)
Show Log