| SNo. | Scientific Name | Locality | Habitat | Basis of Record | Description | Recorded By | Record Number | Island | Source | Date |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Melanothamnus savatieri | Waialua | On Grateloupia | Preserved_Specimen | Doty, M.S. | 20059.2 | Oahu | BISH | 1953-04-19 | |
| 2 | Melanothamnus savatieri | Ala Wai Yacht Harbor; Waikiki Yacht Club | Preserved_Specimen | Cystocarpic. | Defelice, R. | 2603 | Oahu | BISH | 1998-07-23 | |
| 3 | Melanothamnus savatieri | Waialee | Preserved_Specimen | Hollenberg, G.J. | 641 | Oahu | BISH | 1964-01-02 | ||
| 4 | Melanothamnus savatieri | Station 28 | Preserved_Specimen | Spermatangial, cystocarpic & tetrasporic material on 2 slides | Geisler, K.J. | 28001 | Maro Reef | BISH | 2000-09-19 | |
| 5 | Melanothamnus savatieri | San Souci Beach | Preserved_Specimen | Hollenberg, G.J. | 623 | Oahu | BISH | 1962-12-12 | ||
| 6 | Melanothamnus savatieri | Kilauea Bay near Kepuhi Point | Growing on Halimeda discoidea. Female, tetrasporophyte | Preserved_Specimen | 31007.3 | Kauai | BISH | 1959-05-01 | ||
| 7 | Melanothamnus savatieri | Kaaawa | Near outer reef margin -- ID is questionalbe. | Preserved_Specimen | Trono Jr., G.C. | 0.642 | Oahu | BISH | 1964-11-28 | |
| 8 | Melanothamnus savatieri | Camp Pecusa | Boulders along road just before sandy beach area begins. -- Tetrasporophyte, female | Preserved_Specimen | Hollenberg, G.J. | 22422 | Maui | BISH | 1965-04-19 | |
| 9 | Melanothamnus savatieri | Kaneohe Bay, Coconut Island | In shallow water. | Preserved_Specimen | Hollenberg, G.J. | 6515 | Oahu | BISH | 1965-03-20 | |
| 10 | Melanothamnus savatieri | Kaiolohia Bay, between Halulu Gulch & Poaiwa, North-west shore | Subtidal | Preserved_Specimen | Cystocarpic. | Fisher, J.R. | 5016 | Lanai | BISH | 2003-02-06 |
| 11 | Melanothamnus savatieri | Kaaawa | Near outer reef margin | Preserved_Specimen | Trono Jr., G.C. | 0.642 | Oahu | BISH | 1964-11-28 | |
| 12 | Melanothamnus savatieri | Kaaawa | Near outer reef margin | Preserved_Specimen | Cystocarpic | Trono Jr., G.C. | 642 | Oahu | BISH | 1964-11-28 |
| 13 | Melanothamnus savatieri | Waialua | Female | Preserved_Specimen | Doty, M.S. | 20059.2 | Oahu | BISH | 1953-04-19 | |
| 14 | Melanothamnus savatieri | Kamoamoa, Puna | In tidepools | Preserved_Specimen | Doty, M.S. | 20144 | Hawaii | BISH | 1961-03-21 | |
| 15 | Melanothamnus savatieri | Chun's reef | epiphytic on Codium reediae | Preserved_Specimen | Cystocarpic. | Magruder, W.H. | 545 | Oahu | BISH | 1986-03-09 |
| 16 | Melanothamnus savatieri | Diamond Head Beach | Low intertidal.; Epiphytic on Rosenvingia orientalis. | Preserved_Specimen | Tetrasporic, cystocarpic and spermatangial material. | Magruder, W.H. | 511 | Oahu | BISH | 1986-02-03 |
| 17 | Melanothamnus savatieri | Kalaupapa; Site 1, Shipwreck beach, near airport | Intertidal; Under edge of large flat limestone boulder. | Preserved_Specimen | Cystocarpic. | Magruder, W.H. | 785 | Molokai | BISH | 1986-08-06 |
| 18 | Melanothamnus savatieri | Diamond Head Beach | On Pocockiella -- Collected: May 1965 | Preserved_Specimen | Kajimura, M. | 6586.1 | Oahu | BISH | ||
| 19 | Melanothamnus savatieri | Pokai Bay | Coral, sand | Preserved_Specimen | Matsui, T. | 191271 | Oahu | BISH | 1959-07-30 | |
| 20 | Melanothamnus savatieri | Waikiki Beach | On small sea grass -- Female | Preserved_Specimen | Kajimura, M. | 6549.5 | Oahu | BISH | 1965-04-26 |