Krog, H.; Swinscow, T.D.V. 1987: New species and new combinations in some Parmelioid lichen genera, with special emphasis on East African taxa. The Lichenologist 19(04): 419–431.
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| Krog, H.; Swinscow, T.D.V. 1987: New species and new combinations in some Parmelioid lichen genera, with special emphasis on East African taxa. The Lichenologist 19(04): 419–431. |