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14-04-2025 15:11

Need help with 6 coprophilous species
Lennert Gees

Greetings!For my master's dissertation I work on c

27-04-2025 15:54

literature search
Martin Bemmann Martin Bemmann

Can somebody provide this article from a Leningrad

26-04-2025 16:01

Michel Delpont
Jacques Fournier Jacques Fournier

J'ai le regret d'informer les membres du forum qui

26-04-2025 07:15

Paranectria?
Dragiša Savic

Hello everyone,the lichen is Candelariella aurella

26-04-2025 19:32

Arachnopeziza sp.
Francois Guay Francois Guay

I found these small Arachnopeziza sp. growing on d

25-04-2025 22:48

Hilberina from Japan
Gustaf Fredell Gustaf Fredell

Hello,I hope everything is going well. I couple mo

18-04-2025 23:16

Mollisia
Robin Pétermann Robin Pétermann

Bonjour, Voici une probable Mollisia, genre que j

24-04-2025 21:35

Asco on Salix leaf
Thorben Hülsewig

Hi there,last week i could found this asco on an S

25-04-2025 17:24

Cosmospora/Dialonectria spec.
Stefan Blaser

Hi everybody, This collection was collected by JÃ

25-04-2025 09:33

Help with a Pyrenomycete.
Josep Torres Josep Torres

Ascomata shaped like deformed black grains, measur

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on populus
peter peperkamp, 24-10-2012 21:16
this asco on twigs, Asci slightly J+ and operculate.
spores 14.5 -16.4 long,  looks a little warthy within the ascus but it appears to be little drops  of oil, further the spores contain 2 big droplets of oil.
who has a suggestion ?

Peter
  • message #20138
  • message #20138
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Chris Yeates, 24-10-2012 21:25
Chris Yeates
Re : on populus
Hello Peter
are they really operculate? this reminds me of Lanzia (Rutstroemia) luteovirescens

Chris
peter peperkamp, 24-10-2012 23:32
Re : on populus
yep , hard to see but Ill ad a pic of ascus tip..
  • message #20150
Chris Yeates, 24-10-2012 23:53
Chris Yeates
Re : on populus
that makes it inoperculate - an operculum is (generally) a lid which lifts off to form an opening - not a pore opening such as one can see (stained) here . . .

see http://website.nbm-mnb.ca/mycologywebpages/NaturalHistoryOfFungi/DiscomycetesDiscussion.html

regards
Chris
Hans-Otto Baral, 25-10-2012 09:38
Hans-Otto Baral
Re : on populus
Yes, Rutstroemia luteovirescens is most probable (also Martin Bemmann gave me that idea). But the substrate should then be petioles of Acer.

Zotto
peter peperkamp, 25-10-2012 18:03
Re : on populus
oef.... did I go wrong with that ,,, And I draw the right example on the first page of my E & E.. so I wont forget !!!!   
And  I found it on a grassy site in a little park with large Populus , but Acer stood there to a little further away, so it could be Acer as wel ...