07-06-2025 15:39
Edvin Johannesen
A friend sent me a few Betula seeds with tiny blac
08-06-2025 18:03
éric ROMERO
Bonjour à tous, Une récolte alpestre discrète
08-06-2025 14:55
Edvin Johannesen
Ascomata only ca. 1 mm, erumpent on very thin Sali
04-06-2025 15:10
Stefan JakobssonHi forum, On a herbaceous stem, possibly Aegopodi
03-06-2025 20:52
Stefan BlaserHello everybody, I didn't get anywhere with this
20-05-2025 22:15
Francois Guay
I found this ascomycete at the base of a dead fern
Hymenoscyphus calycinoides ?
Nicolas VAN VOOREN,
26-08-2012 20:46
Bonjour.Trouvé dans un ruisseau, sur bois mort à demi-immergé, une miniature de Cudoniella clavus, mais avec des caractères différents :
Apothécies de 1-2 mm de diamètre, stipe long de 2-4 mm, entièrement blanchâtre, devenant ochracé avec l'âge
Excipulum ectal de textura angularis/subglobulosa ; excipulum médullaire de textura intricata, partiellement gélifié
Asques avec crochet, à anneau apical distinctement IKI+ (bb), type Hymenoscyphus
Paraphyses non guttulées, Ø 3-4 µm
Spores (13) 14-19 (20) x 4.5-6 µm, subfusoïdes, avec 1 cloison médiane, contenant quelques guttules.
L'espèce la plus proche me semble être Hymenoscyphus "calycinoides" présente sur le DVD de Zotto.
Nicolas VAN VOOREN,
26-08-2012 20:48
Re : Hymenoscyphus calycinoides ?
Complément photo micro
Hans-Otto Baral,
26-08-2012 22:08
Re : Hymenoscyphus calycinoides ?
Hi Nicolas
Are these black dots inside the cells? ;-)
To become more sure about this you need to search for a living ascus and to look if the spores are septate within or not. The paraphyses look alive and do not contain the VBs that calycinoides has.
I also see a 3-septate spore on your pic which is certainly an overmature one.
In any case, I have not an idea what you have.
Zotto
Are these black dots inside the cells? ;-)
To become more sure about this you need to search for a living ascus and to look if the spores are septate within or not. The paraphyses look alive and do not contain the VBs that calycinoides has.
I also see a 3-septate spore on your pic which is certainly an overmature one.
In any case, I have not an idea what you have.
Zotto
Nicolas VAN VOOREN,
27-08-2012 13:04
Re : Hymenoscyphus calycinoides ?
Spores are septate in asci. You're right also concerning the overmature spores, they can be 2 or 3-septate.
Hans-Otto Baral,
27-08-2012 13:10
Re : Hymenoscyphus calycinoides ?
But did you see living asci? It does not help if you saw them in dead asci. Then they may still be ejected when non-septate. You have no photo of the asci?
So what can we conclude about your fungus? Can you say if the substrate is coniferous or not?
Zotto
So what can we conclude about your fungus? Can you say if the substrate is coniferous or not?
Zotto
Nicolas VAN VOOREN,
27-08-2012 13:18
Re : Hymenoscyphus calycinoides ?
The collection comes from decideous wood.
I'll try to make another collection to verify all the characters, including the spores in living asci.