Erythrotrichia welwitschii (Ruprecht) Batters, 1902
- Batters, E.A.L. 1902. A catalogue of the British marine algae being a list of all the species of seaweeds known to occur on the shores of the British Islands, with the localities where they are found. Journal of Botany, British and Foreign 40 (Supplement): 1–107. BHL Reference page. : 55
- Guiry, M.D. & Guiry, G.M. 2017. Erythrotrichia welwitschii. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Accessed 2 August 2017.