Psoronactis
Chathu2024-12-03T04:25:09+00:00Fungalpedia - Note 461, Psoronactis Psoronactis Ertz & Tehler Citation when using this data: Tibpromma et al. 2024 (in prep.) – Fungalpedia, Lichenicolous fungi. Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1 Classification: Roccellaceae, Arthoniales, Arthoniomycetidae, Arthoniomycetes, Pezizomycotina, Ascomycota, Fungi. Based on phylogenies of combined LSU and RPB2 sequences, Ertz et al. (2015) introduced Psoronactis as a monotypic genus within Roccellaceae and Arthoniales in Arthoniomycetes with the type species P. dilleniana. The species was initially described as Lecanactis dilleniana by Körber (1885), but the genus can differ from Lecanactis species by chemistry, with psoromic and 2′-O-demethylpsoromic acids in the thallus (Ertz et al. 2015). Psoronactis is characterized by thallus crustose, non-corticate, non-sorediate, apothecioid, rounded ascomata, sessile, black, with a persistent, dark brown excipulum, with individual hyphae hardly visible except in the external part, K+ olivaceous, carbonized hypothecium [...]