Chaetothyriaceae | |
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Chaetothyrium straussiae on Straussia mariniana | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Fungi |
Division: | Ascomycota |
Class: | Eurotiomycetes |
Order: | Chaetothyriales |
Family: | Chaetothyriaceae Hansf. ex M.E.Barr (1979) [1] |
The Chaetothyriaceae are a family of ascomycetous fungi within the order Chaetothyriales and within the class Eurotiomycetes. [2] A 2012 molecular analysis of specimens collected from northern Thailand revealed three new species in the family ( Ceramothyrium thailandicum , Chaetothyrium brischofiacola and Phaeosaccardinula ficus ). [3]
The first known lichen-forming species in Chaetothyriaceae, Ceramothyrium ryukyuense , was described in 2024 from Okinawa Island in southern Japan. It was found growing on a living palm leaf in a subtropical coastal forest. The species is characterized by minute, brown ascomata and small, predominantly one-septate ascospores . It differs from non-lichenized Ceramothyrium species, such as C. paiveae and C. philodendri , in its smaller asci and simpler spore structure. Phylogenetic analyses based on nuclear ribosomal DNA sequences placed C. ryukyuense as a sister species to C. exiguum . The species is associated with a photobiont from the Trentepohliales, marking the first confirmed case of lichenization within the family. [4]