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28-11-2023 23:10

Scutellinia peloponnesiaca?
Villalonga Paco

On basic soil in humid bank, Teruel, Spain, around

30-11-2023 14:33

Mycologia Helvetica
Béatrice Senn-Irlet

alll issues of Mycologia Helvetica (1983-2000) are

25-11-2023 14:49

Ijuhya spec. on leaf of Vaccinium vitis-idaea
Kees van Oorde Kees van Oorde

Very small fruiting bodies on affected leaves. Fou

28-01-2014 10:50

Hypoxylon literature
Gernot Friebes

Hi,I'm looking for these three standard references

25-11-2023 18:14

indet. Rhytismatales on oak leaf - North Carolina, USA
Danny Newman Danny Newman

higher resolution images available at inaturalist.

24-11-2023 19:48

Sterile Geoglossum or only juvenile ?
Rajamaki Martti

Hi!I watched today Geoglossum species in Botanical

26-11-2023 12:25

About paraphyses of Geoglossum fallax
Rajamaki Martti

Hi!I found from my old collection of Geoglossum fa

25-11-2023 15:37

Pyronemataceae but which Genus?
Pauline. Penna

These 3mm yellow turbinate discs were found on top

12-10-2018 05:29

cf. Lambertella from Puerto Rico
Danny Newman Danny Newman

Substrate/Host: on hollow, herbaceous twig in a ro

24-11-2023 21:38

Pezicula sp. on Pyrularia pubera - North Carolina, USA
Danny Newman Danny Newman

higher resolution images available at inaturalist.

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Sordariomycetes sp.?
Bernard Declercq, 03-09-2023 11:40
Bernard DeclercqHi friends,

Collected on dead culms of bamboo (Phyllostachys sp.):
Ascomata non-stromatic, immersed, scattered, lifting the periderm, globose, about 250 µm diam., with papillate neck protruding-the surface, black. Asci cylindrical, uniseriate 8-spored,. 57-75x5.5 µm, with enlarged base. Ascospores ellipsoid, 7.5-8x3-4 µm, 1-septate, slightly constricted at the septum, inconspiciously striate, with 1(2-3) large guttules per hemispore, golden yellow.
Paraphyses filiform, guttulate.
I don't find even a matching genus name for this one. Your help is welcome.

Best regards,

Bernard
  • message #76835
  • message #76835
Enrique Rubio, 03-09-2023 11:48
Enrique Rubio
Re : Sordariomycetes sp.
Hi Bernard
Look for an immature Roussoella.
Regards
Bernard Declercq, 03-09-2023 12:03
Bernard Declercq
Re : Sordariomycetes sp.
Thank you very much, Rubio.
Indeed, this is Roussoella minutella (Penzig & Sacc.) Aptroot ss. Aptroot(?)
R. minutella is a synonym of R. pustulans according Hyde (1997) but the collection here has smaller ascospores (7.5-9x3-4 µm vs. 10-16x4-5 µm).
R. minutella ss. str. is described from Indonesia. Maybe the European collections (a.o. Candoussau?) are in need of a new name.

Bernard