Skip to main content

Usnea viktoriana (Ascomycota, Parmeliaceae), a new European taxon of the Usnea barbata-dasopoga group, with a key to the shrubby-subpendulous sorediate Usnea species in Europe

  • Philippe CLERC (a1) and Volker OTTE (a2)

Usnea viktoriana P. Clerc & Otte is described as new. It is characterized by the presence of alectorialic acid as major secondary compound mainly present in the aggregated efflorescent soralia with long isidiofibrils. Usnea parafloridana K. Mark, Will-Wolf & Randlane is synonymized with U. praetervisa (Asahina) P. Clerc. Both U. viktoriana and U. praetervisa are supported by molecular analysis. A key to the shrubby-subpendulous sorediate Usnea species in Europe is provided.

Hide All
Awasthi, G. (1986) Lichen genus Usnea in India. Journal of the Hattori Botanical Laboratory 61: 333421.
Clerc, P. (1984) Contribution à la révision de la systématique des usnées (Ascomycotina, Usnea) d’Europe. I. Usnea florida (L.) Wigg. emend. Clerc. Cryptogamie, Bryologie et Lichénologie 5: 333360.
Clerc, P. (1987) Systematics of the Usnea fragilescens aggregate and its distribution in Scandinavia. Nordic Journal of Botany 7: 479495.
Clerc, P. (1998) Species concepts in the genus Usnea . Lichenologist 30: 321340.
Clerc, P. (2004) Notes on the genus Usnea Adanson. II. Bibliotheca Lichenologica 88: 7990.
Clerc, P. (2007) Usnea Dill. ex Adans. In Lichen Flora of the Greater Sonoran Desert Region Vol. 3 (T. H. Nash III, C. Gries & F. Bungartz, eds): 302335. Tempe, Arizona: Lichens Unlimited, Arizona State University.
Clerc, P. (2011) Usnea . In Nordic Lichen Flora Volume 4: Parmeliaceae (A. Thell & R. Moberg, eds): 107127. Uppsala: Museum of Evolution, Uppsala University.
Clerc, P. (2013) Usnea Schlüssel. In Die Flechten Deutschlands, Band 2 (V. Wirth, M. Hauck & M. Schultz): 11321135. Stuttgart: Ulmer.
Clerc, P. (2016) Notes on the genus Usnea (lichenized Ascomycota, Parmeliaceae) IV. Herzogia 29: 403411.
Culberson, C. F. & Ammann, K. (1979) Standardmethode zur Dünnschichtchromatographie von Flechtensubstanzen. Herzogia 5: 124.
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: 483487.
Fos, S. & Clerc, P. (2000) The lichen genus Usnea on Quercus suber in Iberian cork-oak forests. Lichenologist 32: 6788.
Hale, M. E. (1979) How to Know the Lichens, 2nd edn. Dubuque, Iowa: W. C. Brown.
Halonen, P., Myllys, L. & Petrova, O. L. (1999) The lichen genus Usnea in East Fennoscandia. III. The shrubby species. Annales Botanici Fennici 36: 235256.
Mark, K., Saag, L., Leavitt, S. D., Will-Wolf, S., Nelsen, M. P., Tõrra, T., Saag, A., Randlane, T. & Lumbsch, H. T. (2016) Evaluation of traditionally circumscribed species of the lichen-forming genus Usnea, section Usnea (Parmeliaceae, Ascomycota) using a six-locus dataset. Organisms Diversity and Evolution 16: 497524.
Motyka, J. (1936–1938) Lichenum Generis Usnea Studium Monographicum Pars Systematica. 2 Vols. Leopoli: privately printed.
Ohmura, Y. (2001) Taxonomic study of the genus Usnea (lichenized Ascomycetes) in Japan and Taiwan. Journal of the Hattori Botanical Laboratory 90: 196.
Ohmura, Y. (2012) A synopsis of the lichen genus Usnea (Parmeliaceae, Ascomycota) in Taiwan. Memoirs of the National Museum of Nature and Science 48: 91137.
Ohmura, Y., Skirina, I. & Skirin, F. (2017) Contribution to the knowledge of the genus Usnea (Parmeliaceae, Ascomycota) in southern Far East Russia. Bulletin of the National Museum of Nature and Science, Series B 43: 110.
Otte, V. & Landeck, I. (2012) Nephromopsis laureri und weitere Flechten im Kippenforts bei Schipkau. Verhandlungen des Botanischen Vereins der Provinz Brandenburg 145: 151159.
Randlane, T., Törra, T., Saag, A. & Saag, L. (2009) Key to European Usnea species. Bibliotheca Lichenologica 100: 419462.
Scheidegger, C. & Clerc, P. (2002) Liste Rouge des espèces menacées en Suisse: Lichens épiphytes et terricoles. Bern, Birmensdorf et Genève: OFEFP, WSL and CJBG.
Swinscow, T. D. V. & Krog, H. (1978) Pendulous species of Usnea in East Africa. Norwegian Journal of Botany 25: 221241.
Swinscow, T. D. V. & Krog, H. (1979) The fruticose species of Usnea subgenus Usnea in East Africa. Lichenologist 11: 207252.
Wirth, V. (1995) Die Flechten Baden-Württembergs. 2 Vols. Stuttgart: Ulmer.
Zakeri, Z., Elix, J. A. & Otte, V. (2017) Degradation of alectorialic acid in the lichen genus Usnea . Lichenologist 49: 539543.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

The Lichenologist
  • ISSN: 0024-2829
  • EISSN: 1096-1135
  • URL: /core/journals/lichenologist
Please enter your name
Please enter a valid email address
Who would you like to send this to? *



Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed