| Name | Author | Source | Citation | Year |
|---|---|---|---|---|
| Ceramium saccharinum | (Linnaeus) Stackhouse | Ner. Brit. | 2: xxiv | 1797 |
| Cocconeis sovereignii ('sovereigni') | Hustedt | Duke Univ. Mar. Stat. Bull. | 6: 16, pl. 5: figs. 6, 7 | 1955 |
| HERNDONIA | Shin Watanabe | Phycologia | 59: 406 | 2020 |
| Herndonia botryoides | (Herndon) Shin Watanabe | Phycologia | 59: 406 | 2020 |
| Herndonia texensis | (H.W. Bischoff & H.C. Bold) Shin Watanabe | Phycologia | 59: 406 | 2020 |
| Kirithra sigma | Z.X. Hu, Zhun Li, H.H. Shin & Y.Z. Tang in Hu et al. | Phycologia | 59: 387, figs. 1-34 | 2020 |
| Nemastoma laciniatum ('laciniata') | J. Agardh | Sp. Alg. | 3{1}: 128 | 1876 |
| OSTREOBIACEAE | P.C. Silva ex C.A. Maggs & J. Brodie in J. Brodie, C.A. Maggs, & D.M. John (eds.) | Green seaweeds of Britain and Ireland: | 206 | 2007 |
| Ptilonia subulifera | J. Agardh | Alg. Syst. | 6: 46 | 1890 |
| Triquetrorhabdulus finifer | Theodoridis | Utrecht Micropaleontological Bulletin | 32: 89, pl. 11: figs. 7-10 | 1984 |
| Tsengia laciniata | (J. Agardh) R. D'Archino & G.C. Zuccarello | Phycologia | 59: 440 | 2020 |
| Tsengia northlandica | R. D'Archino & G.C. Zuccarello | Phycologia | 59: 439, figs. 3-24 | 2020 |