World Register of Marine Species (WoRMS)
Spermothamnion johannis Feldmann-Mazoyer, 1941
Guiry, M.D. & Guiry, G.M. (2026). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway (taxonomic information republished from AlgaeBase with permission of M.D. Guiry). Spermothamnion johannis Feldmann-Mazoyer, 1941. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=144701 on 2026-08-25
Feldmann-Mazoyer, G. (1941 '1940'). Recherches sur les Céramiacées de la Mediterranée occidentale. pp. 1-510, errata 1-3, 191 figs, 4 pls [I-IV]. Alger: Imprimerie Minerva 5, Rue Clauzel.