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Contributions to the lichen genus Cresponea (Roccellaceae)

Published online by Cambridge University Press:  29 July 2020

Gintaras Kantvilas*
Tasmanian Herbarium, Tasmanian Museum and Art Gallery, Box 5058, UTAS LPO, Sandy Bay, Tasmania7005, Australia
Author for correspondence: Gintaras Kantvilas. E-mail:


Two Tasmanian species of the genus Cresponea are treated: C. graemeannae Kantvilas sp. nov., characterized by a very thin, saxicolous thallus, apothecia with a thick, radially fissured margin, thinly pruinose disc, hypothecium inspersed with oil droplets, and 5–9-septate ascospores, 25–40 × 6–8 μm; and C. subpremnea (Kantvilas & Vĕzda) Kantvilas comb. nov. The latter has ascospores 30–58 × 4.5–7 μm, which distinguish it from the related C. plurilocularis (Nyl.) Egea & Torrente (ascospores 27–45 × 6–8 μm). The taxa are illustrated, discussed and compared. Cresponea litoralis Elix, based on an Australian type, is considered a synonym of Bactrospora myriadea (Fée) Egea & Torrente. A key to the species of Cresponea reported from Australia is presented.

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Copyright © British Lichen Society 2020

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