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10-09-2025 23:53

Marcel Heyligen Marcel Heyligen

Found on Robinia pseudoacasia together with Diapor

11-09-2025 16:57

Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

10-09-2025 17:18

Blasco Rafael Blasco Rafael

Hola, encontre este estiercol de vaca estos apotec

02-09-2025 11:34

Thomas Læssøe

https://svampe.databasen.org/observations/10527903

07-09-2025 08:19

Josep Torres Josep Torres

Hello.Tiny pinkish discomycetes, photographed and

09-09-2025 12:07

Edmond POINTE Edmond POINTE

Bonjour amis mycologues,Trouvé sur moquette de ch

08-09-2025 19:07

ruiz Jose

Hola me pasan esta recolecta en madera de fraxinus

03-09-2025 21:59

Philippe PELLICIER

La Léchère, Col de la Madeleine, alt 1970m, au s

06-09-2025 21:40

David Chapados David Chapados

Hi, Does somebody know the genus that has those b

07-09-2025 11:34

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,I have identified this fungus as Hymenoscyph

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Scutellinia nigrohirtula complex 090724
Miguel Ángel Ribes, 19-07-2024 11:08
Miguel Ãngel RibesGood morning

This Scutellinia from July 9 grew at 1,400 m in Santa Mª de la Alameda (Madrid) among mud and plant debris.

Ascospores with a Q <1.8, with ornamentation in the form of small tubercles measuring 1-1.3 x 0.5-0.7 microns (width x height), without forming reticulum or ridges.

Hairs of the margin of 1000 microns (800-1200), all with a simple base, not even one with a bifurcated base, much larger than the hairs at the base, which maintain the same morphology. The ornamentation could be similar to S. subhirtella, but this one has hairs with a bi-trifurcate base.

Live spore measurements in water: (20.5) 21.4 - 23.1 (23.6) × (13.2) 13.5 - 14.5 (15.1) µm; Q = 1.5 - 1.7 (1.8) ; N = 52; Me = 22.2 × 14 µm; Qe = 1.6
Hairs in water: (831.3) 843.9 - 1095.6 (1258.9) × (19.7) 23.8 - 32 .5 (38.9) µm; N = 24; Me = 1024.4 × 28.4

With Beñats's key I arrive to S. nigrohirtula, but I have doubts about S. subhirtella.

Thanks in advance.

MIguel Ángel Ribes
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Nicolas VAN VOOREN, 19-07-2024 11:13
Nicolas VAN VOOREN
Re : Scutellinia nigrohirtula complex 090724
Hairs too long for nigrohirtula...
Viktorie Halasu, 19-07-2024 12:40
Viktorie Halasu
Re : Scutellinia nigrohirtula complex 090724
Interesting collection. Also the ornamentation is too high for nigrohirtula, IMO. Can you try to observe the hair base from inside? Squash mount, perhaps in KOH, flat section turned with the hair downward. It's rather unusual for such a long hairs not to have at least 2 roots.  

There is S. aff. patagonica documented from Korea (doi: 10.1127/0029-5035/2013/0120) which has similar ornamentation, Q, hair length, somewhat smaller spores (attached screenshot).
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Miguel Ángel Ribes, 19-07-2024 14:00
Miguel Ãngel Ribes
Re : Scutellinia nigrohirtula complex 090724
Ok, thanks Nicolas and Viktorie, I will study the hairs again.

That S. aff patagonica is really similar.

Anyway, in the photos of the hairs that I sent you can clearly see that in the margin there are 2 types of hairs, some up to 1000 microns long and others practically half as long. Then, underneath, are the flank hairs, which are even smaller.
Miguel Ángel Ribes, 19-07-2024 18:54
Miguel Ãngel Ribes
Re : Scutellinia nigrohirtula complex 090724
You were right, colleagues.

I have done preparations again and I do see hairs with a forked base. I suppose that in the previous sample I was unlucky and took hairs from an underripe specimen. With this new data then we are faced with a S. subhirtella, although with slightly mature spores, it is assumed that the ornamentation should be larger, at least in width.

Thanks a lot.

Miguel Ángel Ribes.
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Malcolm Greaves, 21-07-2024 00:32
Malcolm  Greaves
Re : Scutellinia nigrohirtula complex 090724
I would also add that S patagonica is described as having spores much like umbrorum ie broadly ellipsoid unlike your find. I think subhirtella is a definite option
Miguel Ángel Ribes, 21-07-2024 10:32
Miguel Ãngel Ribes
Re : Scutellinia nigrohirtula complex 090724
Thank you Malcolm, S. subhirtella definitively.