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Additions to the genus Cliostomum (Ramalinaceae) from Australia

Published online by Cambridge University Press:  28 February 2024

Gintaras Kantvilas Open the ORCID record for Gintaras Kantvilas [Opens in a new window]
Gintaras Kantvilas*
Affiliation:
Tasmanian Herbarium, Tasmanian Museum and Art Gallery, UTAS LPO, Sandy Bay, Tasmania 7005, Australia
*
Corresponding author: Gintaras Kantvilas; Email: Gintaras.Kantvilas@tmag.tas.gov.au
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Abstract

Seven species of Cliostomum Fr. recorded from Australia are treated. These include the widespread C. griffithii (Sm.) Coppins, the austral C. praepallidum (Müll. Arg.) Kantvilas & Fryday and the Tasmanian endemic C. vezdae Kantvilas, a reinstated name previously subsumed under C. flavidulum Hafellner & Kalb. Three species are described as new: C. latisporum Kantvilas, a corticolous species containing atranorin and gangaleoidin from coastal Tasmania and New South Wales, characterized by pale pink, soon immarginate apothecia, 0.3–0.9 mm wide, non-capitate, unpigmented paraphyses, and relatively wide, 1(–3)-septate ascospores, 9–15 × 4–6 μm; C. litorale Kantvilas, a saxicolous species containing atranorin and confluentic acid, recorded only from Tasmania, with relatively large, usually pale pinkish apothecia, 0.6–1.5 mm wide, non-capitate paraphyses, and 1(–2)-septate ascospores, 9–13 × 4−6 μm; and C. saxatile Kantvilas, a saxicolous species containing atranorin and lecanoric acid, also known only from Tasmania, with dark brown to black apothecia, 0.3–0.5 mm wide, pigmented with Laurocerasi-brown, capitate paraphyses, and 1-septate ascospores, 7–14 × 3–5 μm. The widespread, coastal Australasian species Tylothallia verrucosa (Müll. Arg.) Kantvilas is transferred to Cliostomum, with the additional synonym Catillaria brisbanensis Räsänen. Megalaria variegata (Müll. Arg.) D. J. Galloway, based on a New Zealand type, is a further synonym of Cliostomum griffithii. All species are illustrated and described on the basis of Australian and Tasmanian specimens.

Keywords

CatillarialichensMegalarianew speciesTasmaniataxonomyTylothallia
Type
Standard Paper
Information
The Lichenologist , Volume 56 , Issue 1 , January 2024 , pp. 27 - 37
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Copyright
Copyright © The Author(s), 2024. Published by Cambridge University Press on behalf of The British Lichen Society

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