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Journal Article

Siphulella, a New Lichen Genus from Southwest Tasmania

Gintaras Kantvilas, John A. Elix and Peter W. James
The Bryologist
Vol. 95, No. 2 (Summer, 1992), pp. 186-191
DOI: 10.2307/3243434
Stable URL: http://www.jstor.org/stable/3243434
Page Count: 6

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Topics: Thallus, Lichens, Asci, Amyloids, Hyphae, Peat soils, Peat, Plant biochemistry, Ascospores, Ellipsoids
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Siphulella, a New Lichen Genus from Southwest Tasmania
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Abstract

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.

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