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The lichen genus Usnea (Parmeliaceae) in tropical South America: species with a pigmented medulla, reacting C+ yellow

Published online by Cambridge University Press:  24 August 2012

Camille TRUONG  and
Philippe CLERC
Camille TRUONG
Affiliation:
Conservatoire et Jardin botaniques de la Ville de Genève, CP 60, 1292 Chambésy, Switzerland; Laboratoire de systématique végétale et biodiversité, Faculté des sciences de l'Université de Genève, CP 60, 1292 Chambésy, Switzerland. Email: [email protected]
Philippe CLERC
Affiliation:
Conservatoire et Jardin botaniques de la Ville de Genève, CP 60, 1292 Chambésy, Switzerland; Laboratoire de systématique végétale et biodiversité, Faculté des sciences de l'Université de Genève, CP 60, 1292 Chambésy, Switzerland. Email: [email protected]
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Abstract

In tropical South America (Venezuela, Colombia, Ecuador, Peru, Bolivia and Brazil), we investigated the diversity of Usnea species with a pigmented, C+ yellow medulla. Four species are treated: the sorediate U. ceratina and U. entoviolata, the latter being new for South America, and the non-sorediate U. cristatula and U. flavorubescens, the latter being newly described here. A detailed description is provided for each species together with an identification key.

Keywords

chemistryendemismmorphologyNeotropicstaxonomy
Type
Research Article
Information
The Lichenologist , Volume 44 , Issue 5 , September 2012 , pp. 625 - 637
Copyright
Copyright © British Lichen Society 2012

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References

Awasthi, G. (1986) Lichen genus Usnea in India. Journal of the Hattori Botanical Laboratory 61: 333–321.Google Scholar
Clerc, P. (1987 a) On the morphology of soralia in the genus Usnea . Bibliotheca Lichenologica 25: 99–102.Google Scholar
Clerc, P. (1987 b) Systematics of the Usnea fragilescens aggregate and its distribution in Scandinavia. Nordic Journal of Botany 7: 479–495.CrossRefGoogle Scholar
Clerc, P. (1992) Some new or interesting species of the genus Usnea (lichenised Ascomycetes) in the British Isles. Candollea 47: 513–526.Google Scholar
Clerc, P. (1998) Species concepts in the genus Usnea (lichenized Ascomycetes). Lichenologist 30: 321–340.CrossRefGoogle Scholar
Clerc, P. (2004) Notes on the genus Usnea Adanson. II. Bibliotheca Lichenologica 88: 79–90.Google Scholar
Clerc, P. (2006) Synopsis of Usnea (lichenized Ascomycetes) from the Azores with additional information on the species in Macaronesia. Lichenologist 38: 191–212.CrossRefGoogle Scholar
Clerc, P. (2008) Usnea. In Lichen Flora of the Greater Sonoran Desert Region Vol. 3 (Nash, T. H., Gries, C. & Bungartz, F., eds): 302–335. Tempe: Lichens Unlimited, Arizona State University.Google Scholar
Clerc, P. (2011 a) Notes on the genus Usnea Adans. (lichenized Ascomycota). III. Bibliotheca Lichenologica 106: 41–51.Google Scholar
Clerc, P. (2011 b) Usnea. In Nordic Lichen Flora 4 (Thell, A. & Moberg, R., eds): 107–127. Uddevalla: Nordic Lichen Society.Google Scholar
Clerc, P. & Herrera-Campos, M. A. (1997) Saxicolous species of Usnea subgenus Usnea (lichenized Ascomycetes) in North America. Bryologist 100: 281–301.Google Scholar
Culberson, C. F. & Ammann, K. (1979) Standardmethode zur Dünnschichtchromatographie von Flechtensubstanzen. Herzogia 5: 1–24.Google Scholar
Culberson, C. F. & Johnson, A. (1982) Substitution of methyl tert-butyl ether for diethyl ether in the standardized thin-layer chromatographic method for lichen products. Journal of Chromatography 238: 483–487.CrossRefGoogle Scholar
Halonen, P., Clerc, P., Goward, T., Brodo, I. M. & Wulff, K. (1998) Synopsis of the genus Usnea (lichenized Ascomycetes) in British Columbia, Canada. Bryologist 101: 36–60.CrossRefGoogle Scholar
Halonen, P., Myllys, L., Ahti, T. & Petrova, O. (1999) The lichen genus Usnea in East Fennoscandia. III. The shrubby species. Annales Botanici Fennici 36: 235–256.Google Scholar
Herrera-Campos, M. A., Clerc, P. & Nash, T. H. III (1998) Pendulous species of Usnea from the temperate forests in Mexico. Bryologist 101: 303–329.CrossRefGoogle Scholar
Herrera-Campos, M. A., Nash, T. H. III & Garcia, A. Z. (2001) Preliminary study of the Usnea fragilescens aggregate in Mexico. Bryologist 104: 235–259.Google Scholar
Isley, P. (1987) Color chart. In Tillandsia: The World's Most Unusual Airplants. Redondo Beach, California: Botanical Press.Google Scholar
James, P. W., Clerc, P. & Purvis, O. W. (2009) Usnea. In The Lichens of Great Britain and Ireland, 2nd ed. (Smith, C. W., Aptroot, A., Coppins, B. J., Fletcher, A., Gilbert, O. L., James, P. W. & Wolseley, P. A., eds): 918–929. London: British Lichen Society.Google Scholar
Knudsen, K. & Lendemer, J. C. (2006) Changes and additions to the North American lichen mycota – V. Mycotaxon 95: 309–313.Google Scholar
Motyka, J. (1936–38) Lichenum Generis Usnea Studium Monographicum, Pars Systematica (Vol. 1). Leopoldi: privately printed.Google Scholar
Ohmura, Y. (2001) Taxonomic study of the genus Usnea (lichenized Ascomycetes) in Japan and Taiwan. Journal of the Hattori Botanical Laboratory 90: 1–96.Google Scholar
Ohmura, Y., Lin, C. K. & Wang, P. H. (2010) Three sorediate species of the genus Usnea (Parmeliaceae, Ascomycota) new to Taiwan. Memoirs of the National Museum of Nature and Science, Tokyo 46: 69–76.Google Scholar
Rodriguez, J. M., Estrabou, C., Truong, C. & Clerc, P. (2011) The saxicolous species of the genus Usnea subgenus Usnea (Parmeliaceae) in Argentina. Bryologist 114: 504–525.CrossRefGoogle Scholar
Seymour, F. A., Crittenden, P. D., Wirtz, N., Øvstedal, D. O., Dyer, P. S. & Lumbsch, H. T. (2007) Phylogenetic and morphological analysis of Antarctic lichen-forming Usnea species in the group Neuropogon . Antarctic Science 19: 71–82.Google Scholar
Stevens, G. (1999) A revison of the lichen family Usneaceae in Australia. Bibliotheca Lichenologica 72: 1–128.Google Scholar
Stevens, G. (2004) Usneaceae. In Flora of Australia Vol. 56A, Lichens (McCarthy, P. M. & Mallett, K., eds): 78–98 & 107–115. Melbourne: ABRS/CSIRO.Google Scholar
Swinscow, T. D. V. & Krog, H. (1978) Pendulous species of Usnea in East Africa. Norwegian Journal of Botany 25: 221–241.Google Scholar
Swinscow, T. D. V. & Krog, H. (1979) The fruticose species of Usnea subgenus Usnea in East Africa. Lichenologist 11: 207–252.Google Scholar
Truong, C., Bungartz, F. & Clerc, P. (2011) The lichen genus Usnea (Parmeliaceae) in the tropical Andes and the Galapagos: species with a red-orange cortical or subcortical pigmentation. Bryologist 114: 477–503.Google Scholar
Wirtz, N., Printzen, C. & Lumbsch, H. T. (2008) The delimitation of Antarctic and bipolar species of neuropogonoid Usnea (Ascomycota, Lecanorales): a cohesion approach of species recognition for the Usnea perpusilla complex. Mycological Research 112: 472–484.Google Scholar