Arup U. 2018: Brigantiaea crystallina (Ascomycota, Teloschistales), a new species from South Korea and Japan. – Herzogia 31: 424–429.

Brigantiaea crystallina Arup is described as new to science from South Korea and Japan. It is similar to B. purpurata but has a pale to pale brownish orange hypothecium, an excipulum penetrated by brownish orange anthraquinone crystals as well as colourless crystals that appear white in polarised light, the spores are smaller and the thallus lacks zeorine. The new species is illustrated and compared with similar species. A key to all Brigantiaea species of the world is also presented.