28-03-2026 07:55
Marc Detollenaere
Hello everybody,Yesterday I found a number of whit
26-03-2026 15:31
Ã…ke Widgren
Hello,I found this one in October last year, on r
27-03-2026 15:23
Gernot FriebesHi,this Trichopezizella deviates from typical T. b
25-03-2026 10:35
Hulda Caroline HolteHello,I collected this species growing on a dead b
27-03-2026 15:08
Gernot FriebesHi,I'm looking for help with this coelomycete on C
27-03-2026 10:47
Ã…ge OterhalsI have tentatively identified this Stictis to S. f
24-03-2026 21:37
Elisabeth StöckliBonsoir,Sur bois (tronc) très pourri de conifère
25-03-2026 22:23
Marc Detollenaere
Dear Forum,On a debarked stem of Tilia, we found s
I have two very similar finding last weekend and this weekend. In the first case, these were fruiting bodies on a periodically moist site on the smouldering wood of a deciduous tree (a few metres away, fruiting bodies on the smouldering wood of Salix cf. fragilis). The size was about 50 mm. Yesterday I found a similar fruitbody that was slightly darker and 45 mm. It was on a smouldering deciduous tree at the edge of a forest stream.
I've microscoped the spores that the fruiting bodies themselves "shot" onto a microscope slide, so I think they may have been ripe. The size was almost the same in both cases (difference of about 1 µm in length and 0.4 µm in width). Size: 31 - 39 × 12 - 15 µm (measurements in water). The spores had a faintly visible reticulate ornamentation in the CB. Do you think it could be Gyromitra parma? The "appendages" on the ends of the spores don't look right to me.
das Sporenmaß ist für G. parma meines Erachtens zu groß und die Ornamentation zu eng und zu flach. G. parma kenne ich mit deutlich höherem weitmaschig ausgeprägtem Ornament.
Könnte es G. matinii sein?
Eine gute Zeit
Ursula
That's very interesting. Fully developed ornamentation, including polar apicules, is present in G. parma only in very mature or overmature spores. And apothecia with a size around 5 cm can be really immature. However, the shape and size of your spores match G. martinii, if that species really exists. I would also look for loaf-shaped spores. On the other hand, G. martinii should prefer wood of Fagaceae probably and rather higher altitudes.
The genus Gyromitra is far from clear.
Greetings, Marek
füge zum Vergleich ein Formblatt von G. martinii an.
Eine gute Zeit
Ursula
I also agree with G. martinii. I found it in 2022 on Fagus, which was apparently the first record for Austria. This year I collected it in two more areas, once on Carpinus, once on Fagus and once on a trunk of an unidentified deciduous tree (possibly Acer pseudoplatanus). It seems to be spreading, which is not surprising for an apparently primarily southern European species. Some photos of G. martinii are attached.
Best wishes,
Gernot
Romans Fund habe ich mikroskopiert und dokumentiert.
Sporen hyalin, spindelig, 3 Tropfen, an den Polen kurz stachelig warzig. Die Sporen haben eine sehr feine, flache, unvollständige netzartige Verzierung. Das Sporenmaß beträgt
32,5 – 38,5 x 13,5 – 15µm Q 2,5.
Die Paraphysen sind oben leicht erweitert, mit braunem Pigment.
Die Gewebeschicht ist Textura tricata.
Das Sporenmaß, die kurzen Stacheln/Warzen an den Polen und die flache, sehr feine unvollständige Ornamentik sind aus meiner Sicht belastbare Merkmale, die Gyromitra parma von G. martinii trennen.
Den Fund halte ich für Gyromitra martinii.
Eine gute Zeit
Ursula
gm-021-0001.jpg
gm-037-0001.jpg
gm-041-0001.jpg