29-01-2016 01:39
Enrique Rubio
Hi again These small (up to 0.35 mm), superficial
22-02-2017 22:05
Christopher Engelhardt
Hi.Found on wet deadwood (Salix?), fruitbodies in
20-02-2017 19:26
Ethan CrensonHello,From Central Park, NYC, on the bark of Crata
22-02-2017 17:28
Carmel SammutOn decaying Quercus ilex branch, with several lich
22-02-2017 11:03
Gernot FriebesHi,this is a tricky one since there is only the as
21-02-2017 16:23
Castillo Joseba
Estos pequeños ascomas en hoja de CameliaNo se si
Hi again
These small (up to 0.35 mm), superficial, hairy, scattered perithecia grew on Salix bark, The ental layer of the walls turns lilac in KOH 10%, Ascospores verrucose. I don't know its anamorphic stage.
Have you some idea for help me?
Thanks in advance
very nice specimen and images!
Maybe I know this species, I have a specimen collected by J.-P. Priou on Ulex, which resembles to yours. It could be a new genus in the Nectriaceae, which is in the course of study.
Best regards,
Christian
Hi Christian
Is the lilac reaction of the internal perithecial layer present in your specimens?
Thanks a lot
Christian
Ascospores are verrucose, mature a bit pink, some 2 times septated, 23 – 31,5(-37) x 9 11(– 12,5) µm. Asci J-, 8-spored, 80-94x14-16 µm. The innerwall purple in KOH.
your specimen seems identical to those collected by Jean Paul Priou on "pyreno" on Ulex and by Enrique on Allantoporthe tessella on Salix.
Is your specimen fungicolous?
Phylogenetic analysis places this fungus in the genus Macroconia (Nectriaceae).
All the best,
Christian
Sorry, I forgot to mention this. Indeed on stroma of Diaporthe inaqualis? or perhaps a Didymospaeria sp.? Both are rather common on this branches.
Most of the perithecia are empty so it is difficult to check without much dammage. First I hope to culture some more specimens of this Macroconia.
Thanks.
Marian
