10-04-2025 10:09
Mathias Hass
Hi, Found in March on last years stick from Rubus
09-04-2025 19:37
Miguel Ángel Ribes
Good afternoon This 1-2 mm Mollisia was growing o
14-04-2025 23:19
Viktorie Halasu
Hello, I've microscoped exsiccate of an Otidea wh
13-04-2025 10:21
Castillo Joseba
Mer mandan el material de Galicia (España), rec
13-04-2025 13:00
Zuzana Sochorová (Egertová)
Hello,I guess the best option how to label this co
10-04-2025 16:22
Bernard CLESSE
Bonjour à toutes et tous,Pourriez-vous me confirm
12-04-2025 19:49
Andgelo Mombert
Bonjour,Un ascomycète qui me pose problème.Ascom
10-04-2025 21:52
Andreas Millinger
Bonsoir! I'm new to the forum and would kindly as
11-04-2025 15:00
Vasileios Kaounas
Found in rotten wood of Abies cephalonica or Popul
Hi,Found in March on last years stick from Rubus idaeus, Denmark.
Apotecia: Do not seem to be erumpent, sessile, smooth grey disk, with anchoring hyphae, bright yellow colour extracted with KOH.
Asci: IKI+, I think with croziers, approx. 53 (40-55) x 5-5,5 my.
Ascospores: 1-celled, mostly clavate, 10,2 (8,3-12,4) x 2,1 (1,7-2,5) my, Q=4,9 , n=20. With some droplets.
Paraphyses: Cylindrical, 3 my wide, with large light diffracting LBs.
Excipulum: Mostly roundish dark cells, some dark hairlike cells seen.
Any help much appreciated.
Kind Regards
Mathias
Yours, Lothar
Hier kannst Du wertvolle Infos lesen:
https://asco-sonneberg.de/pages/gallery/mollisia-revincta-epilobium-koh-110910-01xs21751.php
Dort steht u.a. auch:
Auf die KOH-Reaktion kann man sich wahrscheinlich nicht gut verlassen. Zwar ist sie meist mittelstark und vergänglich, jedoch sind mir von Rubus auch stark gelbe und anhaltende Reaktionen bekannt
Dein Fund ist ja von Rubus.
Yours, Lothar
Mollisia revincta is a complex of species with small spores on herbaceous stems. According to my own collections there are quite many genetically different species which I used to "determine" as revincta. There are collections with strong and with weak yellow reaction and even without. I did not study that complex ion detail, but I'm convined that Mollisia clavata is a different species characterized by the marginal cells. What concerns Mollisia alcalireagens, there is the problem that the i examined the holotype collection PRM899458 and found it to be completely KOH-negative (also NH3-negative). I don't know how to interprete this. On the other hand I have collections from Rubus which are strng yellow whereas collections from Filipendula (which I think to be the "true" revincta" are usually only weakly positive.
No great information all in all, I know. That group needs revision ....
all the best,
Andreas