Type locality: Angeva, Madagascar, 23º10.130'S, 43º36.575'E. Holotype: From a culture of Sphacelaria sp. obtained on Sargassum sp.; from mangrove. CCAP 1393/3 (JAW4329). Notes: Holotype: CCAP 1393/3 (JAW4329). Live culture: Culture Collection of Algae and Protozoa, Scottish Association for Marine Science, Scottish Marine Inst. Iconotype: Figs 5,8, 12–15. Isotype: Dried specimen on paper at Royal Botanic Gardens, Sydney. Cryopreserved culture: CCMP 3276, Bigelow Laboratory for Ocean Science, ME.