Observation 156937: Fuscoporia ferruginosa (Schrad.) Murrill
When: 2013-09-26
(46.3615° 13.7043° 590m)

Notes: Code: Bot_753/2013_DSC8066

Habitat: Trees overgrown former grassland; dominant species Ailanthus altissima, Fraxinus ornus, Corylus avellana, Fagus sylvatica, Juglans regia, Tilia sp., Prunus domestica; next to an abandoned farmhouse; flat terrain, calcareous ground; full shade, quite humid and relatively warm place, partly protected from direct rain by tree canopies; average precipitation ~ 3.000 mm/year, average temperature 7-9 deg C, elevation 590 m (1.950 feet), alpine phytogeographical region.

Substratum: vertical surface of dead, still standing trunk of Juglans regia partly still in bark.

Place: Lower Trenta valley, between villages Soča and Trenta, near abandoned homestead ‘Koc’, Trenta 3, East Julian Alps, Posočje, Slovenia EC

Comments: Fungus growing on either side of partly peeling off bark of the tree, as well as on already decorticated surface of the trunk (less intensive); fungus was spreading on almost 2 m (7 feet) of the trunk height and in some places all around it. Trunk diameter about 50-60 cm; trama corky; SP very faint, possibly whitish ?

Nikon D700/Nikkor Micro 105mm/f2.8

Species Lists


Spores’ statistics and comparison with data from literature.
Mostly subulate hymenial setae.
Probably a piece of setal hypha.
Hyphal system (as far as my understanding allows). Green arrow – generative hypha, violet arrow – skeletal hypha and red arrow – a fraction of setal hyphae.
Pore transversal cross-section with abundant hymenial setae projecting well above hymenium.
Hymenial setae length statistic and comparison with data from literature.

Proposed Names

85% (1)
Eye3 Eyes3
Recognized by sight
Used references: (1) L. Ryvarden, R.L. Gilbertson, European Polypores, part 2., Synopsis Fungorum 7., Fungiflora A/S (1994), p 486.
(2) A. Bernicchia, Polyporaceae s.l., Fungi Europaei, Vol. 10., Edizioni Candusso (2005), p 407.
(3) G.J. Krieglsteiner (Hrsg.), Die Grosspilze Baden-Württembergs, Band 5., Ulmer (2000), p 451.
(4) J. Breitenbach, F. Kraenzlin, Eds., Fungi of Switzerland, Vol.2. Verlag Mykologia (1984), p258.
(5) J.L. Lowe, Polyporaceae of North America. State University College of Forestry at Syracuse University (1996) 90: pp 1-183, available at www.mycobank.org.
Based on microscopic features: Spores smooth. Dimensions: 5.5 (SD = 0.2) x 3.5 (SD = 0.2) μ, Q = 1.56 (SD = 0.08), n = 30. Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil. Hymenial setae dimensions 43 (SD = 6.4) x 7.8 (SD = 0.7) μ, n = 29; generative hypha diameter 2.4 (SD = 0.2) μ, n = 6; skeletal hyphae diameter: 3.6 (SD = 0.6) μ, n = 6; setal hypha diameter 8.6 (SD = 0.7) μ, n = 6; NEA 40x/0.65, magnification 400x, in water, congo red. AmScope MA500 digital camera.
Based on chemical features: Smell indistinctive on rooting wood or earth; 5% KOH reaction on pore and sterile surfaces black.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
if this is a “lack of shrooming mileage”
By: Danny Newman (myxomop)
2014-01-04 15:07:36 PST (-0800)

i am without a shrooming learner’s permit.

By: amadej trnkoczy (amadej)
2014-01-04 13:29:08 PST (-0800)

Danny , thank you again. But I believe you exaggerate. I am just learning and because I awfully lack shrooming mileage, I ‘spend’ a little longer at each my observation as normally on MO.

By: Danny Newman (myxomop)
2014-01-02 19:11:29 PST (-0800)

i know i say it every time, but these observations of yours absolutely floor me. they are the standard by which I judge my own, dramatically poorer contributions to this site. I am so thankful that you are here, doing what you do. bravo.

Created: 2014-01-02 09:36:07 PST (-0800)
Last modified: 2014-01-02 09:36:22 PST (-0800)
Viewed: 71 times, last viewed: 2016-12-16 02:06:18 PST (-0800)
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