Accès membres

Mot de passe perdu? S'inscrire

16-02-2019 17:02

Per Marstad Per Marstad

I found this on desiduous wood, in Norway.Diameter

15-02-2019 20:44

Edvin Johannesen Edvin Johannesen

Hi! These black, semi-immersed/erumpent apothecio

16-02-2019 11:02

Riet van Oosten Riet van Oosten

Hello, Found by a mushroomfriend on dead stem of

15-02-2019 20:32

BERNARD CLESSE BERNARD CLESSE

Pouvez-vous m'aider à identifier ce Rutstroemia (

11-02-2019 12:32

Stephen Mifsud Stephen Mifsud

Can this be identified from the macro-photos alone

15-02-2019 11:03

Edvin Johannesen Edvin Johannesen

Hello! Can anyone tell me how to distinguish Nect

12-02-2019 15:49

Martzuku Eleni

In decaying leaves of castanea and olive tree and

14-02-2019 22:15

Salvador Tello

Hola.Este hongo lo recogí en agosto del 2018 en S

14-02-2019 22:32

Ethan Crenson

I found these minute black apothecioid ascos on ba

14-02-2019 21:00

Patrice TANCHAUD

Bonsoir, sur cône d'épicéa. Apothécie 250 µm

« < 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.....