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2 results

  • Green-algal photobiont diversity (Trebouxia spp.) in representatives of Teloschistaceae (Lecanoromycetes, lichen-forming ascomycetes)

  • Shyam NYATI, Sandra SCHERRER, Silke WERTH, Rosmarie HONEGGER
  • Journal:
    The Lichenologist / Volume 46 / Issue 2 / March 2014
    Published online by Cambridge University Press:
    11 February 2014, pp. 189-212
    Print publication:
    March 2014

  • The green algal photobionts of 12 Xanthoria, seven Xanthomendoza, two Teloschistes species and Josefpoeltia parva (all Teloschistaceae) were analyzed. Xanthoria parietina was sampled on four continents. More than 300 photobiont isolates were brought into sterile culture. The nuclear ribosomal internal transcribed spacer region (nrITS; 101 sequences) and the large subunit of the RuBiSco gene (rbcL; 54 sequences) of either whole lichen DNA or photobiont isolates were phylogenetically analyzed. ITS and rbcL phylogenies were congruent, although some subclades had low bootstrap support. Trebouxia arboricola,T. decolorans and closely related, unnamed Trebouxia species, all belonging to clade A, were found as photobionts of Xanthoria species. Xanthomendoza species associated with either T. decolorans (clade A), T. impressa, T. gelatinosa (clade I) or with an unnamed Trebouxia species. Trebouxia gelatinosa genotypes (clade I) were the photobionts of Teloschistes chrysophthalmus,T. hosseusianus and Josefpoeltia parva. Only weak correlations between distribution patterns of algal genotypes and environmental conditions or geographical location were observed.

  • Typification and emendation of Seirophora Poelt to include species segregated from Teloschistes Norman

  • Patrik FRÖDÉN, Per LASSEN
  • Journal:
    The Lichenologist / Volume 36 / Issue 5 / September 2004
    Published online by Cambridge University Press:
    09 September 2004, pp. 289-298
    Print publication:
    September 2004

  • The type material of Physciamagara Kremp., which is the type species of Seirophora Poelt (Teloschistaceae), is shown to be heterogeneous. It is a mixture of Teloschistesvillosus (Ach.) Norman and Ramalinamaciformis (Delile) Bory. Physciamagara Kremp. is typified on the T. villosus-part. Teloschistes species with multiseriate hairs, spores with short septa, thick and strongly conglutinated cortex hyphae with thick walls, lacking cilia or rhizines, and which have a mainly northern hemispheric distribution, are transferred to Seirophora. The following new combinations are made: Seirophora aurantiaca (R. Br.) Frödén, Seirophora austroarabica (Sipman) Frödén, Seirophora californica (Sipman) Frödén, Seirophora contortuplicata (Ach.) Frödén, Seirophora lacunosa (Rupr.) Frödén, Seirophora scorigena (Mont.) Frödén, Seirophora stenophylla (Tav.) Frödén, and Seirophora villosa (Ach.) Frödén.