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17-09-2025 19:43

Philippe PELLICIER

Sur branche morte de Mélèze. Les ascospores sphÃ

18-09-2025 08:35

Edmond POINTE Edmond POINTE

Bonjour amis mycologues,Trouvé sur moquette de ch

17-09-2025 16:14

Philippe PELLICIER

Apothécies enterrées, fermées au début puis s'

17-09-2025 10:50

Heather Merrylees

Hi there!I am hoping for any advice on the identif

11-09-2025 16:57

Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

16-09-2025 12:53

Philippe PELLICIER

Pézizes de 1-4 mm, brun grisâtres, sur les capsu

03-09-2025 12:44

Enrique Rubio Enrique Rubio

Hi to somebody.I would like to know your opinion o

15-09-2025 14:40

Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello.I'm searching for a digital copy of the seco

14-09-2025 22:16

Philippe PELLICIER

Apothécies petites jusquà 3 mm, oranges, avec de

13-09-2025 14:01

Thomas Flammer

dark brown apothecia, splitIKI-Spores biguttulate

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Clam on a stalk
David Malloch, 04-06-2011 13:40
David MallochHello,

This small discomycete occurs on overwintered leaves of Alnus viridis on my property.  It is never abundant, but I found it in May, 2009 and again this year.  The apothecia look like little brown clams on top of a stalk.  When it is moist the "clam" opens to expose the white hymenium, similar to what species of Lophodermium do, and when it is dry they close again.

Some asci appear to detatch from their croziers and float free but I am not sure if that always happens.  I have been unable to identify it.  It has some similarities to members of the Caliciales, but the habitat and ascus apex seem wrong for that group.  Do any of you recognize this fungus?

Dave
  • message #15439
David Malloch, 04-06-2011 13:42
David Malloch
Re : Clam on a stalk
Here are the asci.
  • message #15440
Stip Helleman, 04-06-2011 13:56
Stip Helleman
Re : Clam on a stalk
Hi Dave,
this is Mytilodiscus alnicola, see Schmidt & Schmidt Ascomyceten im Bild 1 nr. 25

cheers
Stip
  • message #15441
Gernot Friebes, 04-06-2011 13:59
Re : Clam on a stalk
Hi Dave,

looks like Mytilodiscus alnicola to me: http://www.mycokey.com/MycoKeySolidState/species/Mytilodiscus_alnicola.html

Best wishes,

Gernot
Stip Helleman, 04-06-2011 14:00
Stip Helleman
Re : Clam on a stalk
micro data
  • message #15443
David Malloch, 04-06-2011 14:13
David Malloch
Re : Clam on a stalk
Thanks Stip and Gernot. That's a perfect fit.  Judging from the name I should have called it "Mussel-on-a-stipe" instead of "Clam-on-a-stipe".

Dave