TY - JOUR T1 - The lichen genus Usnea in East Fennoscandia. III. The shrubby species JF - Annales Botanici Fennici Y1 - 1999 A1 - Halonen, P. A1 - Myllys, L. A1 - Ahti, T. A1 - Petrova, O.V. SP - 235 EP - 256 VL - 36 UR - http://www.sekj.org/PDF/anbf36/anbf36-235p.pdf ER - TY - JOUR T1 - The lichen genus Usnea (lichenized Ascomycetes, Parmeliaceae) in Estonia with a key to the species in the Baltic countries JF - Lichenologist Y1 - 2007 DO - 10.1017/S0024282907007220 A1 - Tõrra, T. A1 - Randlane, T. SP - 415 EP - 438 VL - 39 JO - LIC ER - TY - JOUR T1 - Testing the use of ITS rDNA and protein-coding genes in the generic and species delimitation of the lichen genus Usnea (Parmeliaceae, Ascomycota) JF - Molecular Phylogenetics and Evolution Y1 - 2013 DO - 10.1016/j.ympev.2013.04.005 A1 - Truong, C. A1 - Divakar, P.K. A1 - Yahr, R. A1 - Crespo, A. A1 - Clerc, P. SP - 357 EP - 372 VL - 68 JO - Molecular Phylogenetics and Evolution ER - TY - JOUR T1 - Phylogenetic relations of European shrubby taxa of the genus Usnea JF - Lichenologist Y1 - 2011 DO - 10.1017/S0024282911000375 A1 - Saag, L. A1 - Tõrra, T. A1 - Saag, A. A1 - Del-Prado, R. A1 - Randlane, T. SP - 427 EP - 444 VL - 43 JO - The Lichenologist ER - TY - CHAP T1 - Usnea T2 - Lichens of Great Britain and Ireland Y1 - 2009 A1 - James, P.W. A1 - Clerc, P. A1 - Purvis, O.W. JF - Lichens of Great Britain and Ireland PB - British Lichen Society CY - London ER -