Lichenologist 15, 2: 130 (1983). Basionym: Parmelia umbrosa Krog & Swinscow, Bull. Br. Mus. nat. Hist., Bot. 9(3): 222 (1981).
Basionym: Parmelia umbrosa Krog & Swinscow, Bull. Br. Mus. nat. Hist., Bot. 9(3): 222 (1981).