Ramalina fraxinea (L.) Ach. 1930
| V.—A List of Lichens gathered in different parts of Wales, principally in the neighbourhood of Barmouth, with a few casual observations upon some of the species T Salwey (1844) Annals And Magazine of Natural History 13: 25-32 | |
| Notes lichénologiques. III M Bouly De Lesdain (1905) Bulletin de la Société botanique de France 52: 547-551 | |
| Lichen Mapping in Europe. Proceedings of the First Meeting on Lichen Mapping in Europe held at Stuttgart from September, 22nd to 24th, 1989 V Wirth and H (Eds ) Oberhollenzer (1990) Stuttgarter Beiträge zur Naturkunde Serie A (Biologie) 456: 1-199 | |
| Checkliste der Flechten und flechtenbewohnenden Pilze Deutschlands - eine Arbeitshilfe V Wirth (1994) Stuttgarter Beiträge zur Naturkunde Serie A (Biologie) 517: 1-63 |