Notes on the genus Punctelia in Denmark

Steen Christensen, Ulrik Søchting

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    Abstract

    Punctelia jeckeri (Roum.) Kalb was previously
    known as P. ulophylla (Ach.) van Herk &
    Aptroot. The taxon was described by Acharius
    (1810) as Parmelia caperata var. ulophylla. It
    was long overlooked or reduced to synonomy,
    i.a. with Parmelia subrudecta (Nyl.) Krog (e.g.
    Hale 1965). Krog (1982), when establishing the
    genus Punctelia, did not re-combine P.
    ulophylla, nor include it in the accompanying
    key. She probably considered it as a synonym
    of P. subrudecta. In a study on European
    Punctelia species with lecanoric acid, van Herk
    & Aptroot (2000) accepted the taxon and made
    the combination Punctelia ulophylla. The
    publication also included photographs and
    descriptions of P. ulophylla and related species
    as well as a key to the species. That paper gave
    rise to more regional papers on the group:
    Aptroot (2003) on North American species and
    Truong & Clerc (2003) on the Swiss species. P.
    subrudecta and P. jeckeri (as P. ulophylla)
    have also been recognized in the recent British
    flora by Dobson (2005), which includes colour
    photographs of both species. Recently Crespo
    et al. (2004) and Thell et al. (2005) showed that
    P. subrudecta and P. ulophylla were
    genetically distinct. Kalb (2007) discovered an
    older name at species level, proposed the combination Punctelia jeckeri, and
    lectotypified the name.
    As a preparatory work to a forthcoming
    revision of the Danish lichen checklist
    (Søchting & Alstrup 2007) it was decided to
    examine the Danish material of the genus
    Punctelia.
    OriginalsprogEngelsk
    TidsskriftGraphis Scripta
    Vol/bind19
    Sider (fra-til)13-16
    Antal sider4
    ISSN0901-7593
    StatusUdgivet - 2007

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