12-06-2026 14:50
François Freléchoux
Bonjour, Voici la brève description d'une Mollis
10-06-2026 21:16
François Freléchoux
Bonsoir,Le dernier du jour, en attendant votre avi
11-06-2026 19:01
William Slosse
Hello all,In an attempt to make a culture of a sus
11-06-2026 19:03
Nicolas VAN VOOREN
Chers membres d'Ascofrance,Le site sera placé en
10-06-2026 23:08
éric ROMERO
Bonjour tous, Je vous propose un Mollisia trouvé
09-06-2026 18:32
Camille MertensSur morceau de roseau immergé 0,5 - 0,7 mm de dia
10-06-2026 12:54
Steve ClementsBonjour encore, Pouvez-vous m'aider, s'il vous pl
10-06-2026 21:07
François Freléchoux
Toutes les tiges de gentianes jaunes de l'an passÃ
10-06-2026 13:41
François Freléchoux
Bonjour à nouveau, Voici une trouvaille d'hier.
Any help with this one would be most welcome:
Substrate: Fagus sylvatica deadwood trunk
Macro: Perithecia 0.4-0.6 mm in diameter, black but covered with rust-colored granules. Perithecia singly at the very margin, but soon very densely packed and coalescing thus looking like a Hypoxylon species. Fruitbody yields a reddish brown KOH extract.
Micro: Asci cylindric, inamyloid, 85-103 x 5-6 µm. Spores aseptate, narrowly elliptic, equilateral, brown, smooth, with germ pore on either side, no germ slit observed, 13-16 x 4-5 µm. Perithecial wall composed of very dark colored round to angular, thick-walled cells.
Many thanks and best wishes,
Stefan
Peut-être Biporispora europaea ?
Andgelo
Bravo!
Yes, Biporispora europaea, I am just surprised it never showed up on the forum.
It spreads over old stromata of H. macrocarpum and indeed mimics a Hypoxylon, but is not a Xylariaceae. Unpublished molecular results place it far from this family and make it fairly mysterious.
Cheers,
Jacques