Trapeliopsis wallrothii (Flörke) Hertel & Gotth. Schneid.

Trapeliopsis wallrothii forms areolate-squamulose thalli. It is the only Trapeliopsis species with isidia, or isidia-like propagules, which leave characteristic scars on the thallus surface. In Europe, it mostly occurs in coastal areas, more rarely in the inland areas with mild climate. Its presence in the Czech Republic remains controversial. The only two historical records, surroundings of Jeseník by Stein 1879 and top part of Sněžka Mt by Kuťák 1926, do not correspond ecologically to other known central European localities. The herbarium material requires future revisions. Trapeliopsis wallrothii is a terricolous species of half-shaded to open rocky and stony habitats on siliceous bedrock. It usually grows on bare ground, on bryophytes in rock cracks or among stones. Its occurrence might be expected at lower elevations with suboceanic climate, e. g., in relict rocky stands in river valleys in the western part of the country.

Literature: Stein B. (1879): Flechten. – In: Cohn F. [ed.]), Kryptogamen-Flora von Schlesien, 2: 1–400, J. U. Kern’s Verlag, Breslau. Kuťák V. (1926): Příspěvek k lichenologii Krkonoš. – Preslia 4: 20–29.

taxonomic classification:

Ascomycota Lecanoromycetes Trapeliales Trapeliaceae Trapeliopsis

Red List (Liška & Palice 2010):RE – extinct
Red List (Malíček 2023):NE – not evaluated

Occurrence in the Czech Republic

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Altitude preferences

Distribution Timeline

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