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31-10-2024 04:07

Amicodisca sp. ?
Francois Guay Francois Guay

Last week, I found what appears to be an Amicodisc

28-10-2024 17:51

Hymenoscyphus s.s. on various herbaceous stems
B Shelbourne B Shelbourne

• Macro and habitat suggest Hymenoscyphus s.l.,

24-10-2024 23:07

Otidea
Patrice TANCHAUD

Bonsoir, récolte réalisée sous hêtres et chê

28-10-2024 23:30

Small Scutellinia on wood
Marc Detollenaere Marc Detollenaere

Dear Forum,I found some small fruit bodies of abou

24-10-2024 14:39

Xylariales sp
Jean-Luc Ranger

Bonjour à tous,Découvert sur un terrain calcaire

23-10-2024 17:27

Hyalopeziza on Rhamnus
Enrique Rubio Enrique Rubio

Hi againThese tiny apothecia (100-200 µm) were gr

25-10-2024 02:15

Possible Allophylaria nervicola on leaves of Magnolia
B Shelbourne B Shelbourne

• Very few macro characters and I initially thou

26-10-2024 16:19

?Calycellina on Picea cone
Juuso Äikäs

Yesterday I found some small white Helotiales grow

25-10-2024 22:17

Yellow discomycetes 4,5 mm with short stem on twigs
Daniel Ghyselinck

Hi everybody,Found in mountain area at about 1000m

20-10-2024 16:48

Pulvinula convexella?
Albert Meek

Globose sporesca. 16um, with  many drops. On bare

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asco on stone
Savic Dragisa, 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
  • message #78575
  • message #78575
  • message #78575
Zdenek Palice, 13-03-2024 14:17
Zdenek Palice
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
Lothar Krieglsteiner
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
Zdenek Palice
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?
Savic Dragisa, 13-03-2024 14:27
Re : asco on stone
Thanks, that's right, I didn't even look at Verrucariales.
Savic Dragisa, 13-03-2024 14:30
Re : asco on stone
It's a piece of brick, not a stone, I see now.