List of sources:
FamilySearch: Ernest Saltmarshe. https://www.familysearch.org/ark:/61903/1:1:J9QP-37X?lang=en AND https://www.familysearch.org/en/tree/person/details/MPSM-1P1 AND https://www.familysearch.org/ark:/61903/1:1:WCJS-7MM?lang=en
Gunn, M. and Codd, L.E. Botanical exploration of southern Africa. Cape Town: Balkema, 1981.
Jones, H.M. A biographical register of Swaziland to 1902. Pietermaritzburg: University of Natal Press, 1993.
JSTOR Global Plants. Letter from Ernest Edward Galpin to Sir William Thiselton Dyer; from South Africa; 28 Nov. 1890. Retrieved from https://plants.jstor.org/stable/10.5555/al.ap.visual.kadc3625 on 7 July 2020.
Roux, J.P. Swaziland ferns and fern allies. Pretoria: Southern African Botanical Diversity Network Report, No. 19, 2003.