Kärnefelt, EI 1998: Teloschistales and Parmeliaceae - a review of the present problems and challenges in lichen systematics at different taxonomic levels. - Cryptogamie, Bryologie Lichenologie19: 93-104. [RLL Suppl.] Abstract: Discussion on systematic problems in Teloschistales and Parmeliaceae including family concepts, generic explosion and infrageneric taxa.
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