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Siphulella, a New Lichen Genus from Southwest Tasmania
Gintaras Kantvilas, John A. Elix and Peter W. James
Vol. 95, No. 2 (Summer, 1992), pp. 186-191
Published by: American Bryological and Lichenological Society
Stable URL: http://www.jstor.org/stable/3243434
Page Count: 6
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The lichen genus Siphulella (Lichenised Ascomycotina, Helotiales, Baeomycetaceae) is described, based on the single species Siphulella coralloidea Kantvilas, Elix & James sp. nov. The genus is characterised by a dimorphic thallus, apothecia borne on podetia, eight-spored asci of the Baeomyces-type, and simple, hyaline ascospores. Its chemistry consists of siphulellic acid, a unique previously unknown β-orcinol depsidone structurally related to psoromic acid. Siphulella is endemic to Tasmania where it occurs on soil, peat, and stones in treeless vegetation in high rainfall areas. Its relationships with the other genera of the Baeomycetaceae are discussed briefly.
The Bryologist © 1992 American Bryological and Lichenological Society