Bungartz, Frank; Elix, John A.; Printzen, Christian (2020). "Lecanoroid lichens in the Galapagos Islands: the genera Lecanora, Protoparmeliopsis, and Vainionora (Lecanoraceae, Lecanoromycetes)". Phytotaxa. 431 (1): 1–85. doi:10.11646/phytotaxa.431.1.1. S2CID214377775.
Bungartz, Frank; Elix, John A.; Printzen, Christian (2020). "Lecanoroid lichens in the Galapagos Islands: the genera Lecanora, Protoparmeliopsis, and Vainionora (Lecanoraceae, Lecanoromycetes)". Phytotaxa. 431 (1): 1–85. doi:10.11646/phytotaxa.431.1.1. S2CID214377775.