asco on stone - Forum ASCOFrance

29-04-2026 08:01

Karstenia chrysophaea? - from Portugal

Lothar Krieglsteiner

... on twig attached to small tree of Citrus auran

28-04-2026 20:33

Parasite on Trochila ilicina?

Vitus Schäfftlein

Hello, I found Trochila ilicina on Ilex aquifoliu

28-04-2026 22:51

Hyaloscypha sur grosse branche morte de hêtre

Bernard CLESSE

Bonsoir à toutes et tous,Pourriez-vous m'aider à

28-04-2026 21:53

Entyloma?

William Slosse

Good evening everyone, Recently, in a wet forest,

28-04-2026 21:50

Hongo briófilo sobre Telaranea en Patagonia Chilena

Pablo Sandoval

Hola a todos,Espero se encuentren bien. Hace mucho

27-04-2026 18:05

bright green minute anamorph on Citrus aurantius-twig from Portugal

Lothar Krieglsteiner

... still attached at standing tree. The green con

28-04-2026 20:07

Martjhamycetales? - from Portugal

Lothar Krieglsteiner

... on twig in the air at standing Ceratonia siliq

27-04-2026 20:52

Lothar Krieglsteiner

Found on hanging tiwg of Olea europaea in dried-ou

27-04-2026 18:48

Micropodia pteridina?

Tony Moverley

Collected 23rd April 2026, Norfolk, EnglandSwarms

27-04-2026 17:41

another anamorph on monocotyleous remains from Portugal

Lothar Krieglsteiner

.. Algarve, same leaf than the last post. The con

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asco on stone

Dragiša Savic, 13-03-2024 14:09

Lichens and parasites on them are not close to me, and this may be something close to that. The stone was on the ground, with some moss but no visible thallus of any lichen. Black small perithecia (0,15-0,20mm diam.) were at one end and around them only these, I guess green algae. Spores resemble Lichenochora in shape.
Any help is welcome

thanks
Dragiša

Zdenek Palice, 13-03-2024 14:17

Re : asco on stone

Hallo,

it could be a member of Verrucariaceae like Thelidium minutulum Körb., which is a typical pioneer on small stones

Zdenek

Lothar Krieglsteiner, 13-03-2024 14:18

Re : asco on stone

Hello Dragiša,
I don`t have a determination for you.
But I think the orange color is because of Trentepohlia green algae becoming free because the "cultivating" lichen fungus is dying.
Best, Lothar

Zdenek Palice, 13-03-2024 14:25

Re : asco on stone

I guess no trentepohlioid algae are present in the last microphoto, and the brick colour on th fiirst picture is that of the stone, is it a weathered piece of brick? or of roof tile? or is it a volcanic or metamorphic pebble rich in iron oxides?

Dragiša Savic, 13-03-2024 14:27

Re : asco on stone

Thanks, that's right, I didn't even look at Verrucariales.

Dragiša Savic, 13-03-2024 14:30

Re : asco on stone

It's a piece of brick, not a stone, I see now.

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