18-05-2024 10:47
Anna KlosGoodmorning,We found this tiny ascomycete (max. 1m
25-03-2024 19:14
Juuso ÄikäsI found some small black pyrenos growing on a dead
10-05-2024 17:40
Anna KlosGood afternoon, Thursday during an inventory we f
17-05-2024 16:25
Pavel JiracekErioscyphella lunata, found on a fallen needle of
29-01-2022 21:44
Jan EcksteinGood evening, apothecia small, yellowish, 150-300
16-05-2024 11:19
Sylvie Le GoffBonjour, j'ai récolté sur une branchette de feui
14-05-2024 09:19
Hans-Otto BaralHi, I want to announce for next Sunday 17.00 middl
16-05-2024 11:49
Castillo JosebaDe ayer en rama de abetoNo se por donde mirarA ver
Hi to all
My friend J. Linde, a great discover of minute fungi, collected these small, white, downy, shortly stipitate, briefly cupulate later pulvinate apothecia, 0.3-0.5 mm in diameter on seeds (samara) of Acer pseudoplatanus.
Thea asci, 8-spored, are IKI negative and with croziers. The spores have only few minute guttules. Excipulum with textura + or - prismatica. The paraphyses are cylindrical, without conspicuous Vb's in water but stain in Crb. Close to the margin they become branched as the excipular hairs (marked with red arrows in the pic).
The very dense excipular hairs have finger-like protuberances as the Mollisina species. I think it could be a Mollisina but I don't know a species that fits well with our fungus.
Thanks for your opinion
As-tu comparé avec Mollisina acerina ?
Amitiés, Guy
Salut Guy
My first idea was this species with IKI reddish asci and without croziers (fide Zotto). So I think is not possible.
Thanks
I agree with that species concept although I did note for my acerina collection IKI rb besides in acerina the spores are more ovoid (less pointed than in this collection). The only Mollisina I know with croziers is also undescribed on Pteridium leaves
regards,
Stip
HB 9340, Chemnitz, Acer fruit. Ap. 0.3-0.6 mm diam., whitish, Calycina-like. Sp. cyl.-fusoid-clavate, *5-6.5 x 1.8-2 µm, Ölm.0,5-1. Asci ca. *28-37 x 5-6 µm, IKI 2rb, very dirty red. Hairs on exterior only as cortical cells with many small finger-like outgrowths. Exudate over exterior light golden-yellow.
I suppose it was with croziers, but my photos do not clearly show. I had it in the folder of Stip's one on Pteridium. I have kept the material and hope to reexamine it at some time.
Zotto
Hi Zotto
Your HB 9340 fits well but 'my asci' have any reaction in IKI. I'm very sure of it!
Thanks!