Usnea fragilescens

Taxonavigation[edit]

Taxonavigation: Lecanorales
Superregnum: Eukaryota Regnum: Fungi Subregnum: Dikarya Divisio: Ascomycota Subdivisio: Pezizomycotina Classis: Lecanoromycetes Subclassis: Lecanoromycetidae Ordo: Lecanorales

Usnea fragilescens Hav. ex Lynge, 1921 (Source: Index Fungorum)

Lynge, B. (1921) Studies on the lichen flora of Norway. - Vidensk. Skrifter, Math.-Naturw. Kl. 7: 1–252. (Mattick Rec.# 21591 - Mattick's Index on Lichens)

Brodo, I.M., Sharnoff, S.D. and Sharnoff, S. (2001) Usnea (pp. 709-726) In, Lichens of North America. Yale University Press, New Haven, 795 pages. (Description of U. fragilescens: pp. 718-719; distribution map for North America: p. 718; color photo: p. 719, plate 884)

Clerc, P. (1987) Systematics of the Usnea fragilescens aggregate and its distribution in Scandinavia. Nordic Journal of Botany 7: 479–495. (RLL List # 132 / Rec.# 3371 - Recent Literature on Lichens) (PDF file)

Clerc, P. (1987) On the morphology of soralia in the genus Usnea, pp. 99-102 in Peveling, E. (ed.) Progress and Problems in Lichenology in the Eighties. Bibliotheca Lichenologica 25. (RLL List # 131 / Rec.# 3370 - Recent Literature on Lichens) (PDF file) (Illustrations of U. fragilescens: figs. 7, 10, 13, 14, 15, 16, 19, 25 & 26)

Clerc, P. (2007) Usnea (pp. 302-335) In: Nash III, T.H., Gries, C., and Bungartz, F. (eds.), Lichen Flora of the Greater Sonoran Desert Region, Vol. 3. Lichens Unlimited, Arizona State University, Tempe, Arizona, 567 pages. (Description of U. fragilescens, pp. 318-319; distribution map for the Sonoran Desert Region: p. 319)

Halonen, P., Clerc, P., Goward, T., Brodo, I.M. and Wulff, K. (1998) Synopsis of the genus Usnea (lichenized Ascomycetes) in British Columbia, Canada. The Bryologist 101(1): 36–60. (RLL List # 170 / Rec.# 7545 - Recent Literature on Lichens) (PDF file) (JSTOR) (Description of U. fragilescens: pp. 49-50)

James, P.W., Clerc, P. and Purvis, O.W. (1992) Usnea (pp. 620-629) In: Purvis, O.W., Coppins, B.J., Hawksworth, D.L., James, P.W. and Moore, D.M. (eds.) The Lichen Flora of Great Britain and Ireland. London: Natural History Museum Publication, 710 pp. (Description of U. fragilescens: p. 626)

Ohmura, Y., Moon, K.-H. and Kashiwadani, H. (2000) Usnea fragilescens Lynge (Parmeliaceae, lichenized Ascomycetes), new to Japan. J. Jap. Bot. 75: 303–307. (RLL List # 185 / Rec.# 22547 - Recent Literature on Lichens) (Illustration of U. fragilescens: p. 318, fig. 1)