19-04-2024 14:28
B ShelbourneCudoniella tenuispora: Distinctive macro and habit
13-04-2024 11:44
Riet van OostenHello, Found by Laurens van der Linde, April 2024
16-04-2024 17:43
Giovanni ANTOLABonjour,Trouvé sous paille humide, autour d'un je
17-04-2024 10:44
Bernard CLESSEJuste à côté du cône avec "Hyphodiscus ayelii"
16-04-2024 22:53
Bernard CLESSEBonsoir à toutes et tous,Pourriez-vous m'aider à
From Aragüés del Puerto, Huesca, this rare species of 1-2.5 mm growing in an old lake filled, in the alpine floor at 2,230 m, between undetermined mosses, in a very shadow and cold place, collected the day 1/10/2019.
Macro reminds me a Boudiera, Marcelleina, etc., but I think it has none, although I guess it will not be a Discinella or Phaeohelotium, at least I do not fit with any species of these genera.
Ectal excipulum with prismatic-angularis to subglobose texture in the margin. Margin with chains of 3-4 subglobose cells. Medullar excipulum has a double structure: a more internal layer with textura intricata of quite thick hyphae and a more external layer with textura prismatica of very long and thick hyphae. Asci with 8 biseriate spores, IKI -, I believe that without croziers (at least I have not been able to see any clear), of (79.6) 80.5 - 89.5 (95.7) × (7.8) 8, 3-10.8 (11.2) µm; N = 22; Me = 85.8 × 9.1 µm. Cylindrical paraphysis, usually with 1 large BV in the apical cell. Ellipsoidal-subfusiform spores, with 2 LBs at the ends, covered by a gel around its perimeter or only at one end, of (9.3) 9.5 - 10.9 (11.6) × (3.7) 3.9 - 4.5 (4.7) µm; Q = (2.2) 2.3-2.7 (2.9); N = 41; Me = 10.3 × 4.1 µm; Qe = 2.5
Thanks in advance.
the crystals and VBs are important, they suggest an Ombrophila in my opinion, although the medulla is hardly gelatinised. But I cannot remember a species with these characters.
The terrestrical O. limosella and "Discinella" badicolor are similar but spores and amyloid asci are different.
Zotto
Interesting, I will check Ombrophila species.
Thanks a lot.
Latin is not my favorite language, but I think this collection fits more or less with "Discinella" badicolor, with IKI - asci. Spores are a little smaller, but I think it is the nearest species:
https://www.biodiversitylibrary.org/page/43592441#page/204/mode/1up
Thank you Zotto.
To check iodine reaction in the Boudier's typus is another problem.
Thanks Zotto.
Boudier also worked on exsiccata colleagues like L.C. Lutz had sent him.
Cheers,
Marcel
So, Discinella aff. badicolor.
See you.
I never saw a drawing of Boudier that clearly originates from an exsiccatum. Perhaps he avoided making drawings of them?
Zotto
Lamprospora lutziana probably was described from an exsiccate sent to Emile by Lutz as far as one can derive from their correspondance by letter.
You will find more about this in the next issue of the special interest-journal ascomycete.org
Best wishes,
Marcel
Best wishes,
Marcel