
25-04-2025 22:48

Hello,I hope everything is going well. I couple mo

24-04-2025 21:35
Thorben HülsewigHi there,last week i could found this asco on an S

25-04-2025 17:24
Stefan BlaserHi everybody, This collection was collected by J

25-04-2025 09:33
Ascomata shaped like deformed black grains, measur

24-04-2025 21:53

... 15.7.24 in the Alps. There were many asci with

23-04-2025 20:16

Good afternoon Looking for Octospores / Lamprospo

24-04-2025 15:03
Henri KoskinenHello, I collected this Lasiobolus 22.04. near Hel

23-04-2025 19:58

I found this interesting Orbilia sp. one year ago

22-04-2025 10:37
François BartholomeeusenAlso found on April 18, 2025 on an old seed-pod of

Stalk up to 12mm.
Apothesium rather plane than convex.
I think in the direction of C. clavus.
Correct?
Thx for all feedback, William

Hello,
I think this is rather Hymenoscyphus vernus.
I can't see with certainty wether the ascus bases are withour croziers - they should be in H. vernus, but WITH croziers in Cudoniella
Ecology is typical for H. vernus wheres C. clavus usually is in floating water and not in mud.
H. vernus changes to cream, than yellowish or even reddish-yellowish, wheres C. clavus stays white until drying and then becomes brownish.
There are also difference in the intensity of the porus reaction between the two, and the spore sizes are somewhat different too.
best regards
Andreas

I, as a beginner, still find it difficult to localize / recognize those crosiers. Perhaps it's because of the fact that I always examine my specimens in water.
Best regards,
William

Is vernus not a species that occurs rather in early spring?
b r, William

another significant difference is outer excipulum: textura angularis in h. vernum and t. intricata in c. clavus!
best
dirk

this latter I would noit believe, it is true for C. tenuispora which has t5. intricata. H. vernus occurs from February till November, according to my many notes. I earlier thought it is restricted to Alnus but I saw that it occurs also on Fagus and Betula wood and bark.
It is not a Hymenoscyphus and also Phaeohelotium is perhaps not the correct genus. In fact, it is very closely related to C. clavus, morphologically as well as genetically. At present ideas arose whether the anamorph genus Anguillospora should be adopted for this group, but I would prefer Cudoniella for both.
Croziers are well visible in water, it depends on the preparation method. Simple squashing requites strong separation of the elements which do not survive such pressure. Better is to try a section with a razor blade, which is not easy with such stalked discos.
Just looked at your photos and I see several clear cases of simple septate ascus bases, partly very yung asci.
Zotto

Hello Zotto,
I found H. vernus once at the border of a calcareous mire on a Prunus spinosa twig ....
best regards,
Andreas

H. vernus is confirmed.

Just one last question if you don't mind: is H.vernus a synonym of Phaeohelotium vernum?

