EN
The lichen biota of a forest ravine was studied. Investigations were carried out in the Grabianka river valley situated in the Elbląg Upland (Wysoczyzna Elbląska). The analyzed lichen biota is very interesting and relatively rich. A total of 122 taxa were found in the area, of which 12 are legally protected, 46 are considered endangered in Poland and 13 are indicators of lowland primeval forests. Some other interesting and rare taxa were also recorded, including Reichlingia leopoldii, Mycobilimbia epixanthoides and Scoliciosporum pruinosum. In addition, a number of rare non-lichenized fungi were identified, such as Tremella cladoniae, Chaenothecopsis savonica or Mycocalicium subtile.
PL
Przeprowadzono badania lichenologiczne w górnej części doliny rzeki Grabianki na Wysoczyźnie Elbląskiej. Miały na celu opracowanie składu gatunkowego porostów. Zarejestrowano 122 taksony, odnaleziono 12 gatunków chronionych, 46 zagrożonych w Polsce i 13 gatunków wskaźnikowych lasów naturalnych. Zlokalizowano stanowiska grzybów zlichenizowanych, rzadkich w Polsce, np. Reichlingia leopoldii, Mycobilimbia epixanthoides i Scoliciosporum pruinosum. Podczas analizy zebranego materiału zidentyfikowano dodatkowo 12 gatunków grzybów niezlichenizowanych, np. Tremella cladoniae, Chaenothecopsis savonica i Mycocalicium subtile.