23-05-2026 11:44
Charles Grapinet
Hello, I am having trouble identifying this copro
25-05-2026 16:44
François BartholomeeusenHi forum members,During an excursion organised by
25-05-2026 16:35
Bernard CLESSE
Bonjour à toutes et tous,J'ai trouvé récemment,
22-05-2026 13:29
Gernot FriebesHi,I am curious to hear your opinion on this mater
23-05-2026 18:57
Sylvie Le GoffBonjour à tousRécolté sur une branchette de Sal
22-05-2026 14:44
Lothar Krieglsteiner
in unripe condition citrine yellow, then soon fadi
22-05-2026 21:35
Steve ClementsBonjour, I expected this find on old wood on our
22-05-2026 18:12
Lothar Krieglsteiner
... in moist chamber from Portugal.As the fungus s
22-05-2026 20:08
Ethan CrensonHello all, Yesterday in NYC I was visiting an e
Dear friends,Today my wife find a Discomycete sample, which looks interesting. Its apothecia are formed on thin twigs of unknown deciduous tree with signs of discoloration in red. Young apothecia are yellow, but soon stay red as the wood .
Asci are 8 - sporous, very small, in average of 14 x 4.2 micrometers. Asci are both monostichous and distichous, but more frequently 6 spores at the top of ascus are placed in two rows, and the two spores near the ascus leg are placed in one row. The size of ascospores: 3.1-3.3 x 1.7-2.2 micrometer.
Please, tell me what is this species and whether it is the cause of red staining of wood or vice versa it absorbs red pigment from the wood.
Thanks in advance ,
Alex
it might be a Hyphodiscus, but to clarify you should lok for marginal hairs, and whether it has a gelatinized excipulum.
H. hymenipohilus is known to stain the wood in red by its anamorph.
Do you have a photo of an ascus? is it amyloid?
Zotto
Thanks for your advice! In the Lugol reagent apical apparatus of asci colored in blue. Most of the asci in my sample are immature, but as a whole the morphology of asci, spores and marginal hairs are very similar to those shown on the site: http://asco-sonneberg.de/pages/gallery/hyphodiscus-hymeniophilus-091227-mcol-0115551.php?group_id=15511&position=2
The legs of asci are enough long and their overall size, even in an immature state is 37 x 4.3 micrometer.
Probably I'm dealing with a young specimen of Hyphodiscus hymeniophilus.
Alex