Seite 1 von 1
Immersed thallus ?
Verfasst: Mi Nov 29, 2023 9:19 am
von BubikolRamios
Re: Immersed thallus ?
Verfasst: Mi Nov 29, 2023 9:26 pm
von abeja
If something is called "immersed" you don' t know, which thing is immersed - it might be apothecia immersed in thallus, or thallus itself immersed in substratum.
If the thallus itself is immersed, this can be called endosubstratic (opposite: episubstratic) - or if immersed in rock it can be called endolithic (opposite: epilithic).
Concerning the lichens shown here (no experience) ... compare the descriptions (and similar lichens which pop up in the keys), but in your examples the thallus is indeed immersed in substratum (in rock).
https://italic.units.it/index.php?proce ... ge&num=843 (Clauzadea inmersa)
https://italic.units.it/index.php?proce ... e&num=1952 (Pyrenodesmia alociza)
Re: Immersed thallus ?
Verfasst: Do Nov 30, 2023 5:36 pm
von BubikolRamios
On your link,
https://italic.units.it/index.php?proce ... e&num=1952
part of img. no. 6 (attachment), I think you can actually see "Thallus crustose, endosubstratic" i.e., where there is thallus of Pyrenodesmia alociza, the rock surface is lowered, right at black prothallus. Depression could be optical thing, but I think not, better, with no doubt on my images.
Seems to me, none of terms describes that. Endosubstratic, endolithic, I think, means it is inside substrate. Does not mean it eats substrate away.
Read somewhere , some lichens produce week acids, so, that could dissolve calcium carbonate ...
Re: Immersed thallus ?
Verfasst: Fr Dez 01, 2023 4:05 pm
von Kraichgauer
btw, "thallus" is spelled with two "l" both in English and German. I have edited it. Michael
Re: Immersed thallus ?
Verfasst: Fr Dez 01, 2023 10:17 pm
von BubikolRamios
Thanks. Will try to remember.
Local wiki converts that to talus.