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12-06-2026 14:50

François Freléchoux François Freléchoux

Bonjour, Voici la brève description d'une Mollis

10-06-2026 21:16

François Freléchoux François Freléchoux

Bonsoir,Le dernier du jour, en attendant votre avi

11-06-2026 16:24

Ethan Crenson

Hi all, Recently, a friend found this Orbilia in

11-06-2026 19:01

William Slosse William Slosse

Hello all,In an attempt to make a culture of a sus

11-06-2026 19:03

Nicolas VAN VOOREN Nicolas VAN VOOREN

Chers membres d'Ascofrance,Le site sera placé en

10-06-2026 23:08

éric ROMERO éric ROMERO

Bonjour tous, Je vous propose un Mollisia trouvé

09-06-2026 18:32

Camille Mertens

Sur morceau de roseau immergé 0,5 - 0,7 mm de dia

10-06-2026 12:54

Steve Clements

Bonjour encore, Pouvez-vous m'aider, s'il vous pl

10-06-2026 21:07

François Freléchoux François Freléchoux

Toutes les tiges de gentianes jaunes de l'an passÃ

10-06-2026 13:41

François Freléchoux François Freléchoux

Bonjour à nouveau, Voici une trouvaille d'hier.

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Pyreno with versicolorous spores on Hickory nut shell
Ethan Crenson, 20-04-2021 18:50
Hello all,

Earlier this week I found this pyrenomycete in a New York City Park. It was growing on the shell of a Hickory nut, possibly Carya glabra.  Uni-peritheciate, but sometimes growing in conjoined clusters. Brittle and carbonaceous. Unfortunately, it was a bit overripe, because I was unable to find asci and the spores looked a little worn out.  But they had an unusual feature which I have never encountered: a dark brown band at the midpoint and hyaline, or near-hyaline end cells.  Ascospores measure 12-16 x 5-6µm. They are either two or three septate (it is hard to tell if there is a septation underneath the dark band.). Has anyone any idea what this might be?

Thanks in advance,

Ethan
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Ethan Crenson, 20-04-2021 19:34
Re : Pyreno with versicolorous spores on Hickory nut shell
I definitely see a resemblance to Melanomma cf. minervae in the database collected by Alain Gardiennet on 31-03-2012 (http://www.ascofrance.fr/search_recolte/3195) on the substrate Noyau de cornouille.  And also Melanomma cf. minervae collected by Savic Dragisa on 14-03-2019 (http://www.ascofrance.fr/search_forum/56784) on a seed of Cornus.  Am I on to something here?
Ethan Crenson, 20-04-2021 19:58
Re : Pyreno with versicolorous spores on Hickory nut shell
I have also found a reference to what I believe is my pyreno in Charles E Fairman "The fungi of our common nuts and pits", Rochester Academy of Science 1921. But I suspect that the information contained therein might need updating.
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