05-04-2026 22:46
Lothar Krieglsteiner
on wood of Ceratonia, Algarve, 3.4.2026.The color
15-05-2026 13:33
Sylvie Le GoffBonjour à tousJe serais très reconnaissante enve
16-03-2011 14:31
roman vargas albertoHi. I would like some opinion about this Peziza
14-05-2026 05:36
Ethan CrensonHi all, I haven't paid much attention to Lachnu
10-05-2026 23:17
Andreas Gminder
Hello,today we found in a moist steep decidous for
11-05-2026 12:32
Bernard CLESSE
Pourriez-vous m'aider à identifier cette héloti
13-05-2026 15:26
François Freléchoux
Bonjour,Voici une récolte faite il y a quelques j
12-05-2026 15:41
Nicolas VAN VOOREN
Dear Ascolovers, especially interested in Pezizale
13-05-2026 12:05
Thierry Blondelle
Bonjour à tous,J'aimerais avoir confirmation de c
28-04-2026 20:07
Lothar Krieglsteiner
... on twig in the air at standing Ceratonia siliq
Fragosphaeria - Cephalotheca? on rotton wood Denmark
Karen Poulsen,
11-02-2024 16:28
Hi
Under thick bark on just felled 90-year-old, stunted Poplar tree - thoroughly rotten I found these small, sulphur-yellow, long-haired balls in flocks. Loosely seated. The peridium, which mostly consists of square cells, is in micro broken into sharp-edged pieces. Asci 8-spored, +/- globose, 7.5-10 µm diam. With spores, the asci wall is almost invisible (in water). Spores mostly pale yellow, oval. In some asci, one side of the spore is clearly concave. Spores approx. 3 x 2 µm. Could it be Fragosphaeria?
Kind Regards,
Karen
Michel RIMBAUD,
11-02-2024 18:40
Re : Fragosphaeria?
Bonjour Keren,
J'ai recherché par curiosité Lasiosphaeria sulphurella dans les différentes clés dont je dispose pour les Lasiospheria, et je ne l'ai trouvé dans aucune d'elles.
Je pense donc que mes clés ne sont pas au top.
Pouvez-vous me passer celle que ous utilisez, qui mentionne L.sulphurella ?
Merci d'avance.
michrimbaud@.com
J'ai recherché par curiosité Lasiosphaeria sulphurella dans les différentes clés dont je dispose pour les Lasiospheria, et je ne l'ai trouvé dans aucune d'elles.
Je pense donc que mes clés ne sont pas au top.
Pouvez-vous me passer celle que ous utilisez, qui mentionne L.sulphurella ?
Merci d'avance.
michrimbaud@.com
Karen Poulsen,
13-02-2024 11:09
Re : Fragosphaeria - Cephalotheca? on rotton wood Denmark
Hi Michel
Sorry, I haven't been able to find any key.
Karen
David Malloch,
13-02-2024 18:22
Re : Fragosphaeria - Cephalotheca? on rotton wood Denmark
This seems a good fit for Cephalotheca sulfurea. Very nice photos!
Karen Poulsen,
15-02-2024 12:06
Re : Fragosphaeria - Cephalotheca? on rotton wood Denmark
Thank you very much, David!
Karen Poulsen,
15-02-2024 23:17
Re : Fragosphaeria - Cephalotheca? on rotton wood Denmark
I have seen collection assumed to be Cephalotheca sulfurea with completely straight hairs and larger spores. Opposite this with spiral hairs. Can you possibly refer to key?
Kind regards,
Karen
David Malloch,
19-02-2024 15:57
Re : Fragosphaeria - Cephalotheca? on rotton wood Denmark
The type collection was studied by Chesters (TBMS 19:261-279. 1935) along with a culture made from fresh material. He stated that, "The whole perithecium is covered at this stage by a mass of interwoven, flexuose, thick-walled and sulphur-coloured hyphae.." He gave measurements from three collections at 4-6 x 2.5-4 µm, maybe slightly larger than yours, but such small objects are hard to measure precisely.
Yours seems to differ from Chester's material in having more spiralled and roughened hairs. Maybe it's another species. There is a culture from Chester's isolate at the Westerjijk Institute, so it would be possible to compare yours with that one using DNA.
The two pictures here are of C. sulfurea from Chester's paper. They are small and not very clear, but perhaps they could be useful.
Karen Poulsen,
19-02-2024 16:43
Re : Fragosphaeria - Cephalotheca? on rotton wood Denmark
Thank you very much for great help!
Karen P.