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31-05-2026 10:35

Pseudoplectania on birch wood
Hulda Caroline Holte

Hello,I collected this species growing on a rather

30-05-2026 21:12

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25-05-2026 16:35

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Bonjour à toutes et tous,J'ai trouvé récemment,

29-05-2026 15:35

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28-05-2026 16:15

Literature request: Caloscypha fulgens f. caesioalba
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Hello,Does anyone have the original publication of

28-05-2026 11:06

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https://svampe.databasen.org/observations/10596750

23-05-2026 11:44

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25-05-2026 16:44

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Hi forum members,During an excursion organised by

26-05-2026 21:25

small ascomycetes on Quercus sp.
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Hello everyone, I'm completely stumped by this li

26-05-2026 22:44

Incrucipulum capitatum ?
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Hi all, I think I have Incrucipulum capitatum her

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Hairy disco on Alnus leave
Daniel Ghyselinck, 21-05-2015 20:29
Hi everybody,
This minute asco was found on Alnus leave last week.
Spores 6 - 8,5 x 1,8 - 2,3, nearly without guttule.
Ascus with crozier, with a purple reaction with IKI.
Paraphyses cylindrical and not protruding.
Outside covered by brown hairs but white at margin. They are completely incrusted. no reaction with KOH.
I thought to a Fuscolachnum, but dit not find any species that matches.
Thank you,
Daniel
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Daniel Ghyselinck, 21-05-2015 20:30
Re : Hairy disco on Alnus leave
Ascus and hairs...
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Lothar Krieglsteiner, 21-05-2015 20:40
Lothar Krieglsteiner
maybe Cistella deflexa

... could fit, please compare. I think this species grows on Salix and Populus leaves, but why not Alnus`(?)


Regards from Lothar

Daniel Ghyselinck, 21-05-2015 20:44
Re : Hairy disco on Alnus leave
Thank you Lothar,
I will check that...
Best regards,
Daniel
Hans-Otto Baral, 21-05-2015 20:53
Hans-Otto Baral
Re : Hairy disco on Alnus leave
Fuscolachnum isn't a bad idea. And you are sure it is Alnus? The hairs remind me of Rubus.
Daniel Ghyselinck, 21-05-2015 21:01
Re : Hairy disco on Alnus leave

It is the only tree I saw there, but not sure.
Here is the only leave I took. 

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Bernard CLESSE, 21-05-2015 21:22
Bernard CLESSE
Re : Hairy disco on Alnus leave
Salut Daniel,

À mon avis Zotto a raison, il doit s'agir d'une foliole de ronce (Rubus). Je ne pense d'ailleurs pas que les feuilles d'aulne sont poilues. 

Pour te donner une idée, voici une foliole de ronce (avec sa célèbre mine due à Stigmella aurella)

Amitiés,

Bernard
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Hans-Otto Baral, 21-05-2015 21:34
Hans-Otto Baral
Re : Hairy disco on Alnus leave
F. misellum varies rather strongly in spore size, depending apparently on the geography (especially more atlantic samples are often smaller-spored, and maybe the longer-spored ones tend to have an apical ring reacting red).

In which country did you collect it?
Bernard CLESSE, 21-05-2015 21:37
Bernard CLESSE
Re : Hairy disco on Alnus leave
Oui Daniel, je confirme définitivement une foliole de Rubus ! Regarde sur la nervure, on y voit encore des aiguillons typiques de Rubus.

Bernard
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Daniel Ghyselinck, 21-05-2015 21:39
Re : Hairy disco on Alnus leave
Oui, très possible Bernard, il y avait beaucoup de ronces à cet endroit.
So OK for Rubus !
For Cistella deflexa, the spores of my collection are a bit too narrow, and the purple reaction with IKI does not match.  ;O(
Daniel
Daniel Ghyselinck, 21-05-2015 22:09
Re : Hairy disco on Alnus leave
It is collected in centrum of Belgium, province Brabant Wallon.
Daniel
Daniel Ghyselinck, 21-05-2015 22:30
Re : Hairy disco on Alnus leave
Thank you Zotto,
Fuscolachnum misellum seems to fit quite well. It looks exactly like in Dougoud's paper : Quatre discales récoltées sur feuilles de Rubus fructicosus, en photographies et dessins.
And the collection in the book on the Biodiversity of Somedio is also similar.
It is shown with a purple reaction on the site Asco-Sonneberg. 
Best regards,
Daniel
Hans-Otto Baral, 22-05-2015 08:41
Hans-Otto Baral
Re : Hairy disco on Alnus leave
Yes, Ingo Wagner observed this red (pruple) reaction.