Dodatak:Popis Smeđe alge, S
Izvor: Hrvatska internetska enciklopedija
- Saccharina Stackhouse, 1809
- Saccorhiza Bachelot de la Pylaie, 1830
- Sargassaceae Kützing, 1843
- Sargassopsis Trevisan, 1843
- Sargassum C.Agardh, 1820
- Saundersella Kylin, 1940
- Sauvageaugloia G.Hamel ex Kylin, 1940
- Scaberia Greville, 1830
- Scoresbyella Womersley, 1987
- Scoresbyellaceae Womersley, 1987
- Scytosiphon C.Agardh, 1820
- Scytosiphonaceae Farlow, 1881
- Scytosiphonales
- Scytothalia Greville, 1830
- Scytothamnaceae Womersley, 1987
- Scytothamnales
- Scytothamnus J.D.Hooker & Harvey, 1845
- Seirococcaceae Nizamuddin, 1962
- Seirococcus Greville, 1830
- Selenophaea Chodat, 1922
- Silvetia E.Serrão, T.O.Cho, S.M.Boo & S.H.Brawley, 1999
- Soranthera Postels & Ruprecht, 1840
- Sorapion Kuckuck, 1894
- Sorocarpaceae
- Spatoglossum Kützing, 1843
- Spermatochnus Kützing, 1843
- Sphacelaria Lyngbye, 1818
- Sphacelariaceae Decaisne, 1842
- Sphacelariales
- Sphacella Reinke, 1890
- Sphaceloderma Kuckuck, 1894
- Sphacelodermaceae
- Sphacelorbus Draisma, Prud'homme & H.Kawai, 2010
- Sphaeridiothrix Pascher & Vlk, 1943
- Sphaerotrichia Kylin, 1940
- Splachnidiaceae Mitchell & Whitting, 1892
- Splachnidium Greville, 1830
- Spongonema Kützing, 1849
- Sporochnaceae Greville, 1830
- Sporochnales
- Sporochnema Womersley, 1987
- Sporochnus C.Agardh, 1817
- Sporochonema Womersley, 1987
- Stegastrum Reinsch, 1890
- Stephanocystis Trevisan, 1843
- Stereocladon J.D.Hooker & Harvey, 1845
- Stereothalia V.B.A.Trevisan, 1849
- Stichogloea Chodat, 1897
- Stictyosiphon Kützing, 1843
- Stilophora J.Agardh, 1841
- Stilopsis Kuckuck, 1929
- Stoechospermum Kützing, 1843
- Stolonophora Nizamuddin, 1969
- Stragularia Strömfelt, 1886
- Streblonemopsis R.Valiante, 1883
- Strepsithalia Bornet ex Sauvageau, 1896
- Streptophyllopsis Kajimura, 1981
- Striaria Greville, 1828
- Striariaceae
- Stschapovia A.D.Zinova, 1954
- Stschapoviaceae
- Stypocaulaceae Oltmanns, 1922
- Stypopodium Kützing, 1843
- Suringariella Womersley & Bailey, 1987
- Symphyocarpus Rosenvinge, 1893
- Syringoderma Levring, 1940
- Syringodermataceae E.C. Henry, 1984
- Syringodermatales