[in Hasskarl]Natuur-Geneesk. Arch. Ned.-Indie 1: 396 (1844) [and in Flora 30: 317 (1847)].

Type locality: Indonesia, Java, Banjoewangie, 1845, H. Zollinger 87 (L - lectotype). Lectotypification by Stenroos (1986).

Chemistry: The variety vulcanica (Zoll. & Moritzi) Vain. contains thamnolic acid (minor), rhodocladonic acid (minor), didymic acid (major), condidymic acid (minor) (Din et al. 1999: 3).

Note: The taxon is often treated as variety of Cladonia didyma, e.g. in Harris (1995: 31).