
17-04-2025 15:37

Bonjour.Je suis à la recherche de collections (r

17-04-2025 13:23
Jan EcksteinHello,there is an interesting collection of a tiny

16-04-2025 08:53
Hello.An anamorph photographed under holm oaks thi

15-04-2025 15:06

I found this small white disco on decaying deciduo

13-04-2025 22:47
Bonjour, Je sollicite votre avis pour cette colle

15-04-2025 21:39

Dear all,struggeling as every year with the aquati

10-04-2025 10:09

Hi, Found in March on last years stick from Rubus

09-04-2025 19:37

Good afternoon This 1-2 mm Mollisia was growing o

14-04-2025 23:19

Hello, I've microscoped exsiccate of an Otidea wh

14-04-2025 15:11
Lennert GeesGreetings!For my master's dissertation I work on c
Capitotricha bicolor ?
Ethan Crenson,
16-03-2025 17:15
Hi all,
Found recently in a wooded park in New York City, among hardwoods including Quercus, Liriodendron, Liquidambar, Prunus. These were on a well rotted branch. My sense is that they are Capitotricha bicolor, but I'm not entirely sure, especially because I detect croziers at the ascus base. I did not find clusters of crystals at the hair ends, though there are crystals among hairs and elsewhere.
Spores hyaline, fusiform, 5.0-9.8 x 1.8-2.5µm
Asci IKI+, with apparent croziers (see photo), 45-50 x 4-4.5µm
Hairs are septate, minutely warted, encrusted with what appear to be crystals, occasionally inflated at the ends.
Paraphyses narrow, projecting above the asci up to 10µm.
Thank you in advance,
Ethan
Alain BRISSARD,
16-03-2025 18:13
Re : Capitotricha bicolor ?
Merci Ethan
Cependant on ne peut pas retenir Capitotricha vu l'absence de paraphyses lanceolées
Il semble qu"il faille se pencher sur le genre Arachnopeziza ou Arachnoscypha dont les caractères conviennent mieux. Possible Arachnopeziza trabinelloides ??
Cependant on ne peut pas retenir Capitotricha vu l'absence de paraphyses lanceolées
Il semble qu"il faille se pencher sur le genre Arachnopeziza ou Arachnoscypha dont les caractères conviennent mieux. Possible Arachnopeziza trabinelloides ??
Ethan Crenson,
16-03-2025 19:30
Re : Capitotricha bicolor ?
Alain,
Thank you for your reply. I think that Arachnopeziza trabinelloides would have 1-septate spores. I neglected to mention that these spores are aseptate. By coincidence, I found Arachnopeziza trabinelloides in a local park just yesterday.
Ethan
Hans-Otto Baral,
16-03-2025 21:37

Re : Capitotricha bicolor ?
The yellowish disc is strange, otherwise it reminds me of Dasyscyphella nivea.