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
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
edit: Hymenoscyphus caudatus H+ in North America
Khomenko Igor,
04-08-2021 18:35
Hi,Is this Hymenoscyphus fraxineus, or do we have something else in Eastern North America? I find mostly H. albidus on rotten leaves here around Ottawa, On, Canada.
This was on heavily rotten leaves on the wet ground. Apothecia small, under 2mm in diameter white and later pale yellowish, stipitate.
Asci 8-spored, IKI+bb, croziers(+), 97x11um, 107x10um, 106x11um.
Ascospores scutuloid, OCI=4,
(16) 16.3 - 20.5 (21.2) × (4.3) 4.4 - 4.8 (4.9) µm
Q = (3.4) 3.5 - 4.5 (4.7) ; N = 23
Me = 18.1 × 4.6 µm ; Qe = 3.9
Paraphyses are cylindrical with multiguttulate VBs, 3.3-3.8um width.
Thank you for your help,
Igor
P.S. more data here: https://inaturalist.org/observations/89861349
Martin Bemmann,
04-08-2021 18:48
Re : Hymenoscyphus fraxineus? in North America
Hi Igor,
with croziers + it can be only H. fraxineus in Europe. Do you find them on leaves or their rachises? And on Fraxinus?
Best Martin
Khomenko Igor,
04-08-2021 19:12
Re : Hymenoscyphus fraxineus? in North America
I think it is on leaves and I'm not sure about the host. It doesn't look like Fraxinus to me, but Fraxinus is abundant as new growth in that area. We lost almost all mature trees because of the emerald ash borer.
Martin Bemmann,
04-08-2021 20:04
Re : Hymenoscyphus fraxineus? in North America
This doesn't look like leaves of Fraxinus. Fraxinus has pinnate leaves.
Juuso Äikäs,
04-08-2021 20:22
Re : Hymenoscyphus fraxineus? in North America
Would H. caudatus s.l. be possible? The normal variation doesn't have croziers, but there are other variations (or species?) that do.
Hans-Otto Baral,
04-08-2021 20:39
Re : Hymenoscyphus fraxineus? in North America
I put it in my folder caudatus H+ central Europe but wonder why the Vbs are only weakly refractive, similar as oftwn the case in typical H. caudatus.
H. albidus occurs in the US? Not sure if I ever heard of this.
Khomenko Igor,
04-08-2021 22:02
Re : Hymenoscyphus fraxineus? in North America
Thank you very much Martin, Juuso, and especially Zotto. Every time I think I know something you prove me wrong.
I will post about "H. albidus" in a new topic.
I will post about "H. albidus" in a new topic.
Regards,
Igor