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eol.org
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handle.net
hdl.handle.net
Sérusiaux, Emmanuël; van den Boom, Pieter; Magain, Nicolas (2021). "Ramalina arsenii, an additional new species in the R. pollinaria group in Western Europe". The Lichenologist. 53 (6): 433–439. doi:10.1017/s0024282921000372. hdl:2268/266833.
jstor.org
Hale, Mason E. (1978). "A new species of Ramalina from North America (Lichenes: Ramalinaceae)". The Bryologist. 81 (4): 599–602. doi:10.2307/3242352. JSTOR3242352.
Marcano, Vicente; Méndez, Antonio Morales; Mendez, Antonio Morales (1994). "New species of Ramalina from Venezuela". The Bryologist. 97 (1): 26–33. doi:10.2307/3243345. JSTOR3243345.