Scutula effusa (Rabenh.) Kistenich, Timdal, Bendiksby & S.Ekman

A species with a granular green thallus and black apothecia, similar to Toniniopsis separabilis or Bacidia biatorina. However, it is characterised by thick, sausage-shaped ascospores. It is a lowland epiphytic species, growing mainly on the bark of old maples. In the latest Red list of lichens of the Czech Republic (Liška & Palice 2010) it is marked as regionally extinct (RE), but recently it has been found on several Acer campestre in floodplain forests around the confluence of the Morava and Dyje rivers and on Acer platanoides in the valley of the Oslava river in the Třebíč region. The latest unpublished data comes from several Acer platanoides trees in scree forests in the Týřov reserve in the Křivoklát region. Scutula effusa is a very rare species in the Czech Republic and central Europe, probably linked to old-growth forest at lower elevations.

taxonomic classification:

Ascomycota Lecanoromycetes Lecanorales Ramalinaceae Scutula

most frequented synonyms:Bacidia auerswaldii, Bacidia effusa

Red List (Liška & Palice 2010):CR – critically endangered
Red List (Malíček 2023):C1 – critically endangered

Occurrence in the Czech Republic

All records: 10, confirmed 10. One click on a selected square displays particular record(s), including their source(s).


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Altitude preferences

Distribution Timeline

Substrate type

Substrate preferences

© Botanický ústav AV ČR, v. v. i. 2020–2024