Ptilocaulis walpersi

Storr, J. F. 1964. Ecology of the Gulf of Mexico commercial sponges and its relation to the fishery. Special Scientific Report 466, United States Fish and Wildlife Service, Washington, D.C. 73 pp.

Storr, J. F. 1976. Ecological factors controlling sponge distribution in the Gulf of Mexico and the resulting zonation. Pp. 261–276 in F. W. H. Harrison and R. R. Cowden, eds. Aspects of Sponge Biology. Academic Press, New York.

Tabb, D. C., and R. B. Manning. 1961. A checklist of the flora and fauna of northern Florida Bay and adjacent brackish waters of the Florida mainland collected during the period July, 1957 through September, 1960. Bulletin of Marine Science of the Gulf and Caribbean 11: 552–649.

Treated as Homaxinella rudis (Verrill, 1907) by Tabb and Manning (1961), Storr (1964, 1976), and Pomponi and Rützler (unpublished manuscript).