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
11-05-2026 12:32
Bernard CLESSE
Pourriez-vous m'aider à identifier cette héloti
10-05-2026 23:17
Andreas Gminder
Hello,today we found in a moist steep decidous for
28-04-2026 20:07
Lothar Krieglsteiner
... on twig in the air at standing Ceratonia siliq
27-04-2026 20:52
Lothar Krieglsteiner
Found on hanging tiwg of Olea europaea in dried-ou
11-05-2026 20:22
Lothar Krieglsteiner
on attached twig of standing Ficus caricaquite uns
29-04-2026 10:44
Lothar Krieglsteiner
growing at moist, drying-out soil at the side of a
Hi,Collected in October 1992 on decaying petioles of Petasites hybridus:
Perithecia superficial, gregarious, subglobose, flattened upper part, 0.3-0.4(0.5) mm diam., indistinct papillate, yellow-orange, with a crown of spreading, hyaline hairs.
Asci 8-spored, 73-83x9-10 µm.
Spores narrowly ellipsoid, 18-23(25)x5.5-7 µm, 1-septate, filled with 1-2 µm diam. guttules, smooth, hyaline.
Perithecial wall of textura angularis. Processes tapering, up to 115x13 µm, composed of agglutinated 2 µm diam. hyphae, hyaline.
Only a drawing available. Any idea? Thanks in advance.
Description of ascomatal wall, colour of perithecia in KOH as well as in lactic acid are required.
If there is no changing colour, you have choice among four genera:
Lasionectria, Lasionectriella, Ijuhya and Hydropisphaera, which are separated by characteristics of the cells composing the wall.
Did you see some orange, oily droplets in ascomatal wall or in hymenium?
Good luck
Christian