Spongia plumosa n.sp. Montagu, 1818: 116.
Halichondria plumosa : Johnston, 1842: 103.
Pronax plumosa : Gray, 1867: 536; Van Soest and Weinberg, 1980: 10; Van Soest et al., 1981: 42.
Microciona carnosa n.sp. Bowerbank, 1866: 133.
Hymeniacidon plumosa : Bowerbank, 1866: 195.
Microciona plumosa : Bowerbank, 1874: 61, pl. XXIV figs. 7-13.Parfitt, 1868: 15.
Plumohalichondria plumosa : Carter, 1885: 355; Higgin, 1886: 78; Topsent, 1894: 8; Arnesen, 1903: 19, pl. III fig. 1, pl. V fig. 2, pl. VI fig.1;
Myxilla irregularis : Topsent, 1894: 8.
Stylostichon plumosum : Stephens, 1912: 26; Stephens, 1920: 47; Arndt, 1935: 80, fig. 166; Burton, 1957: 34; Bruce et al., 1963: 47; Borojevic et al., 1968: 23; Könnecker, 1973: 458; Durán and Solórzano, 1982: 52; Ackers et al., 1985: 159, figs. 69-70; 1992: 135, fig. 69.
Pronaxella plumosa : Burton, 1931: 168.
Pronax plumosum : Descatoire, 1969a: 196.
Phorbas plumosus : Voultsiadou-Koukoura and Van Soest, 1991a.
Arndt (1935) gives the following additional synonyms:
Dendoryx irregularis
Desmacidon plumosum
Halichondria irregularis