2004. Mycological Research, Volume 108, Issue 8, 2004, Pages 873-884, ISSN 0953-7562. Auhors: Oscar Blanco, Ana Crespo, Pradeep K. Divakar, Theodore L. Esslinger, David L. Hawksworth, H. Thorsten Lumbsch. Melanelixia and Melanohalea, two new xenera segregated from Melanelia (Parmeliaceae) based on molecular and morphological data.