Reassessing Vermisporium (Amphisphaeriaceae), a genus of foliar pathogens of eucalypts

P.A. Barber, P.W. Crous, J.Z. Groenewald, I.G. Pascoe, P. Keane

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    Abstract

    The genus Vermisporium presently accommodates 13 species, 11 of which are associated with leaf spots of eucalypts in the Southern Hemisphere. Vermisporium is chiefly distinguished from Seimatosporium (Amphisphaeriaceae) on the basis of a short exogenous basal appendage, and the absence of a recognisable apical appendage. Due to the increasing importance of these species in native forests, and confusion pertaining to their taxonomy, a revision of the genus was undertaken based on fresh collections and dried herbarium specimens. Results from DNA sequence data analyses of the nrDNA-ITS and 28S nrRNA genes for species of Vermisporium indicated the genus to be a synonym of Seimatosporium. New combinations are introduced in Seimatosporium for several species: S. acutum, S. biseptatum, S. brevicentrum, S. obtusum, S. orbiculare, S. verrucisporum and S. walkeri. An updated key to all species occurring on eucalypts is also provided. Keywords: Australia, Eucalyptus, foliar pathogen, Seimatosporium, taxonomy
    Original languageEnglish
    Pages (from-to)90-118
    JournalPersoonia
    Volume27
    DOIs
    Publication statusPublished - 2011

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