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24-03-2026 21:37

Helminthosphaeria
Elisabeth Stöckli

Bonsoir,Sur bois (tronc) très pourri de conifère

25-03-2026 10:35

Encoelia impudicella?
Hulda Caroline Holte

Hello,I collected this species growing on a dead b

26-03-2026 15:31

Hymenoscyphus ombrophiliformis?
Ãke Widgren Åke Widgren

Hello,I found this one in October last year, on r

26-03-2026 12:50

Pseudombrophila
David Chapados David Chapados

Hi,I'm having a hard time figuring which Pseudombr

26-03-2026 11:17

asco in Ulmus
Vasileios Kaounas Vasileios Kaounas

Found 11-03-26, in leaf of Ulmus sp. Diameter 2-4

25-03-2026 22:23

Orbilia with resin deposits
Marc Detollenaere Marc Detollenaere

Dear Forum,On a debarked stem of Tilia, we found s

24-03-2026 15:44

Leptodontidium cf. trabinellum
Åge Oterhals

I hope someone can confirm the name of this collec

25-03-2026 20:53

Didymopsis helvellae on Helvella?
François Bartholomeeusen

Dear forum members,On 23 March 2026, I found sever

23-03-2026 20:16

Coprotus 210226 315
Miguel Ãngel Ribes Miguel Ángel Ribes

Good eveningI'm unable to identify this Coprotus o

25-03-2026 15:06

Hyaloscypha albohyalina à confirmer
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous me confirm

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Coelomycete on Cytisus scoparius
Bernard Declercq, 03-12-2022 16:11
Bernard DeclercqHi there,

Collected in Belgium on twigs of Cytisus scoparius:
Pycnidia semi-immersed, scattered to gregarious, subglobose, 0.3-0.4 mm diam., black, extruding a black creamy conidial mass.
Conidia subcylindrical to slightly barrel-shaped,, with truncate ends,  4-11(19)x(1.5)2(2.5) µm, smooth, with thin blackish wall, eguttulate, occurring in disarticulating, unbranched, short chains.
Ass. Schizoxylon compositum (Stictidaceae).

Based on the conidium morphology, it might be a Phacidiella sp. Although Phacidiella has hyaline conidia, Crous et al. (2007) introduced P. eucalypti, a species with pigmented conidia and moreover phylogenetically allied to Stictidaceae. Purely coincidental?

Your comments/help is welcome.

Best regards,

Bernard Declercq

  • message #74563
  • message #74563
Viktorie Halasu, 03-12-2022 19:27
Viktorie Halasu
Re : Coelomycete on Cytisus scoparius
Hello,

did you consider genus Hormodochis? (H. melanochlora but perhaps others too) It might be the anamorph of Schizoxylon. In GenBank, H. melanochlora from CBS (KP004487) has 98% match with Guy Marson's Schizoxylon sp. from LUX (OM891651). 

I've seen here similar anamorphs on several woody plants (Ulmus, Populus, Rhamnus, Humulus...), no idea whether they all are the same species or not. I don't have any practice with Schizoxylon and cannot culture them anyway.

edit: Genus Hormodochis is shown to belong to Stictidaceae in Crous et al (2020): The Genera of Fungi – G5: ... doi.org/10.3114/fuse.2020.05.04

Viktorie
Bernard Declercq, 04-12-2022 10:45
Bernard Declercq
Re : Coelomycete on Cytisus scoparius
Hello Viktorie,

Thanks for your suggestion.
Indeed, Hormodochis melanochlora could be a match.

Bernard
Bernard Declercq, 07-12-2022 20:34
Bernard Declercq
Re : Coelomycete on Cytisus scoparius
... and yes, I was too fast. I see now that Crous recombined his Phacidiella eucalypti into Hormodochis eucalypti (Crous) Crous 2020.

Bernard