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Bonjour à toutes et tous,Pourriez-vous m'aider à
Calycina sp. 2
Nicolas VAN VOOREN,
31-10-2009 18:43
Encore un Calycina (je pense), récolté sur tige morte de roseauApothécies 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 ?
Nicolas VAN VOOREN,
31-10-2009 18:44
Re:Calycina sp. 2
Dessin micro...
Hans-Otto Baral,
31-10-2009 21:20
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
Is roseau = Rosa?
Zotto
Alain GARDIENNET,
31-10-2009 22:23
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
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
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
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
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
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.
Hans-Otto Baral,
01-11-2009 17:18
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
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
