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Bernard CLESSE
Bonsoir à toutes et tous,J'ai trouvé ce matin ce
Asco inconnu
Enrique Rubio,
08-04-2009 20:46
Purrait quelqu'un me donner une opinion sur cet petit asco (0.2-0.3 mm) orange que croit dans les branches mortes de Corylus, sur le bois et sur pyrenos (Diatrype).Il me montre des asques IKI (-), avec crochets, et les spores sont septées (jusqu'a 7 septa) et germinent a l'interieur des asques. Paraphyses avec carotenoides.
Je ne connais pas le genre
Merci en avancé
Enrique
I'd like to know your opinion about this small asco (0.2-0.3 mm) that grows on Corylus branches, on the wood and on pyrenomycetes (Diatrype) surface. The asci are IKI (-), and they have croziers. The spores are multiseptate (up to 7 cross septa) and germinating inside the living asci. Paraphyses branched with carotenoids. I don't know even the genus to wich belongs.
Many thanks for your help
Enrique
Enrique Rubio,
08-04-2009 20:49
Re:Asco inconnu
Spores
Enrique Rubio,
08-04-2009 20:50
Re:Asco inconnu
Asci and paraphyses
Enrique Rubio,
08-04-2009 20:51
Re:Asco inconnu
Apothecial margin
Hans-Otto Baral,
08-04-2009 21:47
Re:Asco inconnu
Dear Enrique
I know this fungus very well. It is on the DVD under the name Naeviopsis cf., HB 5472a.JPG, but presently I have it in the directory Calloria as unidentified species with 7 septa. I know only a few collections from (sub)mediterranean Spain, but 2 years ago I detected it in my village on a cane of Rubus fruticosus, 1m above ground, on bast, meal of bark beetle & wood. Ap. rehydr. light amber-yellow, greenish translucent. Asci *113-130 x 14.5-15,5 µm. Sp. *23-25.5 x 5.3-7 µm, 7-septate within turgescent asci already (there masked by the minute LBs, probably also 3-septate). From this are the attached photos.
I know this fungus very well. It is on the DVD under the name Naeviopsis cf., HB 5472a.JPG, but presently I have it in the directory Calloria as unidentified species with 7 septa. I know only a few collections from (sub)mediterranean Spain, but 2 years ago I detected it in my village on a cane of Rubus fruticosus, 1m above ground, on bast, meal of bark beetle & wood. Ap. rehydr. light amber-yellow, greenish translucent. Asci *113-130 x 14.5-15,5 µm. Sp. *23-25.5 x 5.3-7 µm, 7-septate within turgescent asci already (there masked by the minute LBs, probably also 3-septate). From this are the attached photos.
Hans-Otto Baral,
08-04-2009 21:53
Re:Asco inconnu
So you see I am not sure with the genus and I never saw something comparable in the literature. There exist similar collections with 3-septate spores from Spain (HB 5516, see DVD), and one with spores similar as yours but only 3-septate. The latter I found in abundance in my village on a cultivated, free-standing living apple tree, on the detaching bark of the main stem in 1 m above ground (where also Hysteropatella prostii grows). I am not at all sure if there exist several specie or one very variable species. But I never saw the spores to germinate within the living asci. Do you have a photo?
Zotto
Zotto
Enrique Rubio,
08-04-2009 22:10
Re:Asco inconnu
Yes, Zotto. The red arrow of my image marks one germinating spore inside the living ascus. I will send you by e-mail my images at bigger resolution.
Many thanks again
Enrique
Many thanks again
Enrique
Hans-Otto Baral,
08-04-2009 22:14
Re:Asco inconnu
O.k., but this is a dead ascus. Compare my living ascus near the apothecia.
Zotto
Zotto
Enrique Rubio,
08-04-2009 22:33
Re:Asco inconnu
How you can know if the ascus is alive or dead? It is for the turgescence of the ascus?
Hans-Otto Baral,
08-04-2009 23:06
Re:Asco inconnu
of course, yes. Fresh fungi often contain some dead cells and dry fungi may be fully alive, so you must decide for every single cell if it still lives. Dead asci do not change their size when you add KOH or other lethal media, but living asci shrink enormously. Have a look at the main page of my website.
http://www.gbif-mycology.de/HostedSites/Baral/
Zotto
http://www.gbif-mycology.de/HostedSites/Baral/
Zotto