This species was only seen by the authors who described it based on 5 specimens; no further mention in the literature [details]
Only known from type locality [details]
Doubtful species or just a variety of C. xamachana [details]
The species was considered conspecific with Lychnorhiza lucerna (Mianzan & Cornelius, 1999; Silveira & Cornelius, ... [details]
Haeckel (1880) mentioned that the species resembles a young Rhizostoma. Vanhöffen (1902) wondered to which genus ... [details]
possibly similar to Mastigias papua [details]
doubtful species [details]
Species requiring further studies, doubtful. [details]
Polyrhiza is considered a doubtful genus because only Ehrenberg and Haeckel observed specimens; description by ... [details]
The species Phyllorhiza chinensis L. Agassiz, 1862 (from China Seas) and Phyllorhiza trifolium Haeckel, 1880 (from ... [details]