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31-10-2009 18:43

Nicolas VAN VOOREN Nicolas VAN VOOREN

Encore un Calycina (je pense), récolté sur tige

31-10-2009 18:36

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour. Voici les données d'une récolte d'un C

31-10-2009 18:13

Martin Bemmann Martin Bemmann

Hello all, today I found some Ostropales on old

30-10-2009 17:26

Beñat Jeannerot Beñat Jeannerot

Adio à tous, Bien, toujours dans ma vision des

27-10-2009 22:40

Gernot Friebes

Hi, I'd need your help with this anamorph. I fo

27-10-2009 16:31

Luc Bailly Luc Bailly

Comme quoi tout arrive, j'ai des problèmes pour t

27-10-2009 16:26

Luc Bailly Luc Bailly

Quelles sont ces cellules violettes verruqueuses,

27-10-2009 08:05

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour. Mon ami Jean Cavet m'a ramené hier une

25-10-2009 01:18

Yannick Mourgues Yannick Mourgues

Bonsoir. Voici un Rutstroemia trouvé sur branc

24-10-2009 17:54

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour. Je vous soumets une récolte d'un Aleuri

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Calycina sp. 2
Nicolas VAN VOOREN, 31-10-2009 18:43
Nicolas VAN VOORENEncore un Calycina (je pense), récolté sur tige morte de roseau
Apothécies courtement stipitées, cupuliformes peu profondes, hyménium blanc ou ivoire, surface externe concolore, finement pubérulente ; Ø 1-2.5 mm
Sous-hyménium de textura intricata ; excipulum de textura subglobulosa/angularis, à hyphes hyalines, d'où émergent des celules vésiculeuses contenant une grande vacuole réfringente.
Asques 80-108 x 6-7 µm, avec crochet, 8 sp. bisériées, pars spor. 38-48 µm, anneau apical IKI rb. Paraphyses avec une grande vacuole sommitale réfringente. Spores 15-18 x (2) 2.2-3 µm, avec une cloison (y compris dans l'asque), contenant plusieurs guttules.

Je n'ai pas réussi à trouver un nom. Une idée ?
  • message #9449
Nicolas VAN VOOREN, 31-10-2009 18:44
Nicolas VAN VOOREN
Re:Calycina sp. 2
Dessin micro...
  • message #9450
Hans-Otto Baral, 31-10-2009 21:20
Hans-Otto Baral
Re:Calycina sp. 2
Ups, this is also subherbarum.... I saw that you wrote in your other find that paraphyses are without VBs. Are you sure? Or maybe they were dead?

Is roseau = Rosa?

Zotto
Alain GARDIENNET, 31-10-2009 22:23
Alain GARDIENNET
Re:Calycina sp. 2
Roseau = Phragmites.
Here, I suppose it is Phragmites communis, isn't it Nicolas ?
(In French, Rosa are called "rosier" which gives "roses" as flowers).
Good night,
Alain
Nicolas VAN VOOREN, 01-11-2009 10:03
Nicolas VAN VOOREN
Re:Calycina sp. 2
Yes, that's right, it grows on dead stem of Phragmites. OK for C. subherbarum. I suppose this is a "working" name or is this name is published?
Hans-Otto Baral, 01-11-2009 12:37
Hans-Otto Baral
Re:Calycina sp. 2
Yes, it's a working name. It's almost identical with herbarum but mainly differing in croziers, so one could philosophize if it is a separate species or not.

I almost forgot, however, that there is a Hymenosyphus subherbarum Raitv. & Sharma 1984, a somewhat dubious taxon which might be a Calycina too!

One question: a gramineous substrate would be the first time for this rather common taxon. The same is true for C. herbarum (without croziers) which I never saw on Monocots. So are you really sure with Phragmites? Is the stem round or somewhat angular in cross section? From a photo on a cross section this would become quite easily be clear.

Zotto

Zotto
Nicolas VAN VOOREN, 01-11-2009 13:16
Nicolas VAN VOOREN
Re:Calycina sp. 2
Well, the place where the 2nd collection was harvested was full of Phragmites. Here you can find a photograph of a section of the stem.
  • message #9463
Hans-Otto Baral, 01-11-2009 17:18
Hans-Otto Baral
Re:Calycina sp. 2
Hi Nicolas

I am actually sure that this is a dicot. The small central mark and the arrangement of the pores indicate that. Take a true Phragmites culm, I think it has a big lumen inside.

I recently took a photo of a cross section of a probably very thick culm of Phragmites from a Chinese collection. Here you see that the pores are arranged in groups near the culm surface.

Zotto
  • message #9464