Halymenia pennata P.L.Crouan & H.M.Crouan, 1865 species synonym

Meristotheca gigartinoides A.B.Joly & Ugadim ex A.B.Joly et al. species synonym

Gigartina tenera J.Agardh, 1841 species synonym

Rhabdonia tenera (J.Agardh) J.Agardh species synonym

Neoagardhiella baileyi species doubtful

Meristotheca floridana Kylin species synonym

Agardhiella ramosissima var. dilitata J.Agardh, 1885 variety synonym

Chrysymenia ramosissima Harvey, 1853 species synonym

Agardhiella ramosissima var. harveyana J.Agardh, 1885 variety synonym

Mychodea subulata (C.Agardh) Yendo, 1911 species synonym

Neoagardhiella ramosissima (Harvey) M.J.Wynne & W.R.Taylor, 1973 species synonym

Agardhiella floridana (Kylin) Gabrielson ex S.M.Guim. & E.C.Oliveira species accepted

Agardhiella subulata (C.Agardh) Kraft & M.J.Wynne species accepted

Sphaerococcus subulatus C.Agardh species synonym

Agardhiella tenera (J.Agardh) F.Schmitz species synonym

Agardhiella coulteri (Harvey) Setchell species accepted

Agardhiella ramosissima (Harv.) Kylin species accepted

Agardhiella tenera J.Ag. species accepted

Neoagardhiella ramosissima (Harv.) Kylin species synonym

Rhabdonia baileyi Harvey & Kutzing species synonym

Neoagardhiella ramosissima var. dilatata (J.Agardh) M.J.Wynne & W.R.Taylor variety synonym

Acanthococcus subulatus (C.Agardh) J.Agardh, 1852 species synonym

Gigartina subulata (C.Agardh) Grev., 1830 species synonym

Agardhiella baileyi (Harvey ex Kütz.) W.R.Taylor, 1970 species synonym

Agardhiella floridana (Kylin) Gabrielson species homotypic synonym