Observation 62932: Hypomyces poliporinus

When: 2011-01-23

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

46.32998° 13.51176°

Who: amadej trnkoczy (amadej)

Specimen available

Does anybody know some good net sources about Hypomyces? This is probably an anamorph. No perithecia observed. But because of my total lack of experience with Hypomyces I doubt in my determination in spite of the fact that observed characters fit quite well to the description in Ref.1.

Growing on pore surface of several fairly old Trametes versicolor fruitbodies. Whitish color mat over the host’s hymenophore, sometimes extending over several adjacent host’s fruitbodies; on the most dense places it looks almost as a thin white crust; host’s basidiomata with no apparent change (observed with a magnifier 15 x). Hyphae have spread from the host to a glass plate where I collected `spores` (under a plastic cover with a piece of wet tissue inside to keep humid environment). In 4 days and 6 hours it looked like a very delicate fan-like branching of hyphae about 2 cm (0.8 inch) radius. Telemorph and anamorph stages are reported as common in North America but rare in Europe (Ref.1.). So, my doubts are even stronger.

Habitat: Warm deciduous tree forest, predominantly Ostrya carpinifolia, Fraxinus ornus, Corylus avellana, flat terrain, calcareous ground, mostly in shade, partly protected from direct rain, average precipitation ~ 3.000 mm/year, average temperature 8-10 deg C, elevation 555 m (1.800 feet), alpine phytogeographical region.

Substratum: Trametes versicolor growing on a fallen, partly rotten Ostrya carpinifolia trunk.

Place: Bovec basin, near Poljanca place, east slopes of Mt. Kopa, 1.439 m (4.721 feet), East Julian Alps, Posočje, Slovenia EC.

Anamorph known as Sympodiophora polyporicola
Code: Bot_485/2011_DSC6343

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

Species Lists


Motic B2-211A, magnification 40 x, in water. The arrow probably shows conidiophores (without conidia?).
Motic B2-211A, magnification 400 x, in water.
Motic B2-211A, magnification 1.000 x,oil,in water.

Proposed Names

57% (1)
Eye3 Eyes3
Recognized by sight
Based on microscopic features: Conidia (?) form clavate, equilateral; 0-2 septate; dimensions: 27.3 (SD = 4.6) x 9.5 (SD = 1.5) micr., Q = 3.1(SD = 0.52), n = 16. Motic B2-211A, magnification 1.000 x,oil, 400 x and 40 x, in water.
Based on chemical features: No smell.

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
links apparently work
By: amadej trnkoczy (amadej)
2011-01-31 17:36:40 CET (+0100)

Sorry Charles. I just tried all three links and all of them work properly with my PC.
Best regards

Links wont work for me
By: Charles Seltenright Sr (Shroomin Yooper)
2011-01-31 16:22:34 CET (+0100)

I tried all of these but none seem to work.

very informative source
By: amadej trnkoczy (amadej)
2011-01-31 09:41:17 CET (+0100)

Thank you Darv for the very informative source. The key based on anamorphs and the description (at least as far as the characters I am able to check are concerned) of the H. poliporinus fit well to my observation. For greater certainty it would be nice to get back and try to find teleomorph. But I read that a teleomorph has never been found yet in Europe.

By: Darvin DeShazer (darv)
2011-01-30 21:44:23 CET (+0100)

Key and descriptions to Hypomyces on Polypores:

Created: 2011-01-30 21:07:26 CET (+0100)
Last modified: 2011-01-31 09:34:07 CET (+0100)
Viewed: 131 times, last viewed: 2018-01-22 07:42:20 CET (+0100)
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