Accès membres

Mot de passe perdu? S'inscrire

14-11-2018 19:07

Andgelo Mombert

Bonsoir,Sur bois mort de feuillu. Apothécies sess

12-12-2018 20:58

Per Marstad Per Marstad

I found this on Fagus. Spores 60-75 x 5 my, with 8

06-12-2018 07:35

Ethan Crenson

Hello all, These were found by my friend recently

08-12-2018 15:13

Per Marstad Per Marstad

This was growing on Fagus, 2-3 mm. The spores are

09-12-2018 23:06

Joop van der Lee

Found on cow dung. Fruitbody is covered with tufs

06-12-2018 00:02

Elsa Sousa

Good evening,I need your sharp eyes on this ascos.

11-12-2018 17:31

Peter Püwert Peter Püwert

Can somebody help ? Massee G. et Salmon E. S. (19

11-12-2018 23:18

Iglesias Plácido

Hola amigos, est sortie la revue Errotari de cette

10-12-2018 23:47

BERNARD CLESSE BERNARD CLESSE

Que pensez-vous de cette récolte, faite sur crott

07-12-2018 17:24

Enrique Rubio Enrique Rubio

Quelqu'un pourrait-il avoir une copie de ce docume

« < 1 2 3 4 5 > »
mollisioid mystery
Chris Yeates, 18-09-2018 15:33
Chris Yeates
Bonjour tous

Normally I steer clear of this daunting group, but a recent collection with abundant apothecia was too tempting.

Apothecia densely gregarious; with a margin only when very young then plane; pale grey with some turning pale yellowish-brown. No reaction to KOH. Scale bar in photograph = 1mm.

Paraphyses with no vacuolar contents - apparently completely "empty" (hence my confusion). Scale bar in photograph = 10µm.

Asci 8-spored, IKI bb, apparently with croziers; occasionally a "Psilachnum body" was observed.

Ascospores ovoid-ellipsoid, occasionally slight fusoid, guttules as in photograph. Scale bar in photograph = 10µm.

Any suggestions very welcome.

Chris
  • message #54680
  • message #54680
  • message #54680
  • message #54680
Hans-Otto Baral, 18-09-2018 16:16
Hans-Otto Baral
Re : mollisioid mystery
Hi Chris
does the fungus also have a substrate? :-)

The living paraphyses look "empty", so logically the KOH reaction is negative.

This should be a Pyrenopeziza. The small spores appears to point to P. aquosa. That species has typically the Psilachnum-drop.
Zotto
Chris Yeates, 18-09-2018 17:44
Chris Yeates
Re : mollisioid mystery
Thanks for the quick response Zotto.

Here are photo's showing the collection site. The fungus was growing on the underside of a piece of decorticated wood - I assumed, from this area of Quercus - lying at the side of a long-disused concrete track at the edge of woodland.

I had assumed Pyrenopeziza but couldn't immediately think of lignicolous ones, and of course older works still put aquosa in Mollisia.

I think P. aquosa is definitely in the right area. I have quickly looked through the long and interesting http://www.ascofrance.com/search_forum/27917 thread, where the question of "Mollisia" dextrinospora is raised. I too think Ellis and Ellis's Mollisia aquosa is something different - the marginal cells on my fungus were only slightly larger and more enlarged than the rest of the excipulum, rather like your HB 7640. By contrast E & E's fungus has distinctly elongated marginal cells.

Best wishes

Chris
  • message #54684
  • message #54684
Hans-Otto Baral, 18-09-2018 17:55
Hans-Otto Baral
Re : mollisioid mystery
Yes there were some questions.....