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Pannaria howeana and Pannaria streimannii, two related new lichen species endemic to Lord Howe Island, Australia

Published online by Cambridge University Press:  08 June 2012

Arve ELVEBAKK
Arve ELVEBAKK
Affiliation:
University of Tromsø – Tromsø University Museum, N-9037 Tromsø, Norway. Email: [email protected]
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Abstract

Pannaria howeana and P. streimannii are described here as new to science. Both species are restricted to the isolated Lord Howe Island in Australia. The former is known only from one collection and the latter from two sites. Pannaria howeana is a primarily fertile species, with rather broad lobes and few rhizines restricted to the central part of the lower side of the thallus. The lower sides of the lobes have a pattern of characteristic radiating hyphae and narrowly recurved margins similar to the New Zealand lichen P. araneosa (C. Bab.) Hue, which is considered to be its closest relative. Pannaria streimannii is a phyllidiate counterpart of P. howeana. Both species share a new chemosyndrome consisting of porphyrilic acid in combination with vicanicin and leprolomin. Local endemic species are uncommon among tripartite Pannaria species, and the coarse vegetative propagules of both species appear to be an adaptation to local dispersal on a small, isolated island.

Keywords

biogeographychemistrygigantismlichenized AscomycotaPannariaceaerare speciestaxonomyvegetative dispersal
Type
Research Article
Information
The Lichenologist , Volume 44 , Issue 4 , July 2012 , pp. 457 - 463
Copyright
Copyright © British Lichen Society 2012

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References

Bjerke, J. W., Lerfall, K. & Elvebakk, A. (2002) Effects of ultraviolet radiation and PAR on the content of usnic and divaricatic acids in two arctic-alpine lichens. Photochemical and Photobiological Sciences 1: 678–685.CrossRefGoogle ScholarPubMed
Carlquist, S. (1966) The biota of long-distance dispersal. III. Loss of dispersibility in the Hawaiian flora. Brittonia 18: 310–335.CrossRefGoogle Scholar
Culberson, C. F. (1972) Improved conditions and new data for the identifications of lichen products by a standardized thin layer chromatography method. Journal of Chromatography 72: 113–125.CrossRefGoogle Scholar
Elvebakk, A. (2007) The panaustral lichen Pannaria sphinctrina (Mont.) Tuck. and the related new species P. lobulifera from New Caledonia. Cryptogamie, Mycologie 28: 225–235.Google Scholar
Elvebakk, A. (2012) Pannaria rolfii, a new name for a recently described lichen species Nova Hedwigia 94: in press.CrossRefGoogle Scholar
Elvebakk, A. & Elix, J. A. (2006) Pannaria isidiosa, a new Australian lichen with a new chemosyndrome. Lichenologist 38: 557–563.CrossRefGoogle Scholar
Elvebakk, A. & Galloway, D. J. (2003) Notes on the heterogeneous genus Psoroma s. lat. in New Zealand. Australasian Lichenologist 53: 4–9.Google Scholar
Elvebakk, A., Fritt-Rasmussen, J. & Elix, J. A. (2007) The New Zealand lichen Pannaria leproloma (Nyl.) P.M. Jørg. and its panaustral relative P. farinosa nom. nov. Lichenologist 39: 349–359.CrossRefGoogle Scholar
Elvebakk, A., Robertsen, E. H., Park, C. H. & Hong, S. G. (2010) Psorophorus and Xanthopsoroma, two new genera for yellow-green, corticolous and squamulose lichen species, previously in Psoroma. Lichenologist 42: 563–585.CrossRefGoogle Scholar
Feige, G. B., Lumbsch, H. T., Huneck, S. & Elix, J. A. (1993) Identification of lichen substances by a standardized high-performance liquid chromatographic method. Journal of Chromatography 646: 417–427.CrossRefGoogle Scholar
Galloway, D. J. (2007) Flora of New Zealand Lichens. Revised 2nd edition Including Lichen-forming and Lichenicolous Fungi. Lincoln, New Zealand: Manaaki Whenua Press.Google Scholar
Hutton, I. (2002) A Field Guide to the Plants of Lord Howe Island. Lord Howe Island: I. Hutton.Google Scholar
Jørgensen, P. M. (2001 [‘2000’]) Survey of the lichen family Pannariaceae on the American continent, north of Mexico. Bryologist 103: 670–704.CrossRefGoogle Scholar
Lumbsch, H. T., Ahti, T., Altermann, S., Amo de Paz, G., Aptroot, A., Arup, U., Bárcenas Peña, A., Bawingan, P. A., Benatti, M. N., Betancourt, L. et al. (2011) One hundred new species of lichenized fungi: a signature of undiscovered global diversity. Phytotaxa 18: 1–127.CrossRefGoogle Scholar
Nordin, A. (1997) Ascospore structures in Physciaceae: an ultrastructural study. Symbolae Botanicae Upsalienses 32 (1): 195–208.Google Scholar
Orange, A., James, P. W. & White, F. J. (2001) Microchemical Methods for the Identification of Lichens. London: British Lichen Society.Google Scholar
Passo, A. & Calvelo, S. (2006) New reports and combinations in the family Pannariaceae (Lecanorales, lichenized Ascomycota). Lichenologist 38: 549–555.CrossRefGoogle Scholar
Passo, A., Stenroos, S. & Calvelo, S. (2008) Joergensenia, a new genus to accommodate Psoroma cephalodinum (lichenized Ascomycota). Mycological Research 112: 1465–1474.CrossRefGoogle ScholarPubMed