18-05-2009 19:10
Jean Pierre Dechaume
Chers amis, Sur feuilles de Carex, trouvé une do
18-05-2009 14:16
Alain GARDIENNET
Dans le message précédent une image est encore v
18-05-2009 12:28
Miguel Ángel Ribes
I think it is closer Hypocrea argillacea than H. c
17-05-2009 20:06
Nicolas VAN VOOREN
Bonsoir. Voici les caractères micros d'une Ostro
16-05-2009 22:31
Patrice LEFRANCOISBonjour, Je crois avoir trouvé une Tarzetta spur
16-05-2009 21:29
Alain GARDIENNET
L'image que je vais joindre devrait être celle de
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
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.
