Gymnangium japonicum
Holotype: TM K1695, CSIRO Cruise SSO1/97, 44.21°S 147.05°E to 44.22°S 147.05°E, depth 750-900 m, benthic sledge, 70 km SSE of South East Cape, Tasmania. Colony of three infertile stems 25-70 mm high; microslides MV F83467 & 83468, RMNH-Coel. 29011, slide 4461, from holotype colony.