This is a list of red seaweeds (Domain: Eukaryota, Division: Rhodophyta) recorded from the oceans bordering South Africa. This list comprises locally used common names, scientific names with author citation and recorded ranges. Ranges specified may not be the entire known range for the species, but should include the known range within the waters surrounding the Republic of South Africa.

List ordering and taxonomy complies where possible with the current usage in Algaebase, and may differ from the cited source, as listed citations are primarily for range or existence of records for the region. Sub-taxa within any given taxon are arranged alphabetically as a general rule. Details of each species may be available through the relevant internal links. Synonyms may be listed where useful.

Class: Bangiophyceae

Order: Bangiales

Family Bangiaceae Bangia atropurpurea (Mertens ex Roth) C.Agardh 1824, syn. Conferva atropurpurea Mertens ex Roth 1806, Oscillatoria atropurpurea (Roth) C.Agardh 1817, Bangia fuscopurpurea var. atropurpurea (Roth) Lyngbye 1819, Bangia atropurpurea (Mertens ex Roth) C.Agardh 1824, Bangiella atropurpurea (Roth) Gaillon 1833, Bangiadulcis atropurpurea (Roth) W.A.Nelson 2007,M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=133038; searched on 26 February 2012 (Cosmopolitan)Stegenga, H., Bolton, J.J., & Anderson, R.J. 1997. Seaweeds of the South African West Coast. Contributions from the Bolus Herbarium, University of Cape Town. Porphyra capensis Kützing 1843,Wendy Guiry in Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=1436; searched on 18 March 2012 (Abundant on whole of west coast extending into Namibia and along south coast of Western and Eastern Cape. Endemic) Pyropia gardneri (G.M.Smith & Hollenberg) S.C.Lindstrom in Sutherland et al. 2011, syn. Porphyrella gardneri G.M.Smith & Hollenberg 1943, Porphyra gardneri (G.M.Smith & Hollenberg) M.W.Hawkes 1977,M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=3473; searched on 26 February 2012 (Cape of Good Hope to Brandfontein) Pyropia saldanhae (Stegenga, J.J.Bolton & R.J.Anderson) J.E.Sutherland in Sutherland et al. 2011, syn. Porphyra saldanhae Stegenga, Bolton & R.J.Anderson 1997,Wendy Guiry in Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=142225; searched on 26 February 2012 (Hondeklip Bay and Olifantsbos, endemic)

Order: Porphyridiales

Family Phragmonemataceae Neevea cf. repens Batters 1900,Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=569; searched on 26 February 2012 (Hout Bay)

Class: Compsopogonophyceae

Order: Erythropeltidales

Family Erythrotrichiaceae Erythrocladia cf. polystromatica P.J.L.Dangeard 1932,Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=1188; searched on 26 February 2012 (St James, False Bay and Cape Hangklip) Erythrotrichia carnea (Dillwyn) J.Agardh 1883, syn. Erythrocladia carnea, Conferva carnea Dillwyn 1807, Bangia ciliaris subsp. pulchella (Harvey) De Toni 1897,M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=342; searched on 26 February 2012 (Probably fairly common, but South African distribution uncertain) Erythrotrichia welwitschii (Ruprecht) Batters 1902, syn. Cruoria welwitschii Ruprecht 1850,Wendy Guiry in Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=343; searched on 26 February 2012 (Cape of Good Hope and False Bay extending eastwards at least as far as Port Elizabeth) Membranella africana Stegenga, Bolton & Anderson 1997,Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=3472; searched on 26 February 2012 (Cape of Good Hope at least as far as Port Alfred) Porphyrostromium boryanum (Montagne) P.C.Silva in Silva, Basson & Moe 1996, Porphyra boryana Montagne 1846, Erythrotrichia boryana (Montagne) Berthold 1882, Phyllona boryana (Montagne) Kuntze 1891, Erythrotrichopeltis boryana (Montagne) Kornmann 1984, Porphyrostromium boryanum (Montagne) M.J.Wynne 1986,Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=344; searched on 26 February 2012 (Yzerfontein to Oatlands Point, False Bay) Sahlingia subintegra (Rosenvinge, 1909) Kornmann 1989, syn. Erythrocladia subintegra Rosenvinge 1909, Erythrocladia irregularis f. subintegra (Rosenvinge) Garbary, Hansen & Scagel 1981. Erythropeltis subintegra (Rosenvinge) Kornmann & Sahling 1985, Erythrotrichopeltis subintegra (Rosenvinge) Kornmann & Sahling 1985,Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=13068; searched on 26 February 2012 (Worldwide – probably widely distributed in SA )

Class: Florideophyceae

Order: Acrochaetiales

Family Acrochaetiaceae Acrochaetium brebneri (Batters) G.Hamel 1928, syn. Rhodochorton brebneri Batters 1897, Chantransia brebneri (Batters) Rosenvinge 1909, Audouinella brebneri (Batters) P.S.Dixon 1976,Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=531; searched on 26 February 2012 (False Bay side of the Cape Peninsula) Acrochaetium balliae (Stegenga), nom. illeg. syn. Audouinella balliae Stegenga 1985,M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=5371; searched on 26 February 2012 (Port Nolloth to Hout Bay) Acrochaetium catenulatum M.A.Howe 1914,M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=589; searched on 26 February 2012 (Namibia to Eastern Cape) Acrochaetium endozoicum (Darbishire) Batters 1902, syn. Chantransia endozoica Darbishire 1899, Rhodochorton endozoicum (Darbishire) Drew 1928, Audouinella endozoica (Darbishire) P.S.Dixon 1976,M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=536; searched on 26 February 2012 (Cape Peninsula) Acrochaetium moniliforme (Rosenvinge) Børgesen 1915, Chantransia moniliformis Rosenvinge 1909, Rhodochorton moniliforme (Rosenvinge) Drew 1928, Kylinia moniliformis (Rosenvinge) Kylin 1944, Chromastrum moniliforme (Rosenvinge) Papenfuss 1945, Audouinella moniliformis (Rosenvinge) Garbary 1979,M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=614; searched on 26 February 2012 (False Bay eastward at least as far as Transkei) Acrochaetium plumosum (K.M.Drew) G.M.Smith 1944, syn. Colaconema plumosum (Drew) Woelkerling 1971, Rhodochorton Plumosum Drew 1928,Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=4173; searched on 26 February 2012 (Hondeklip Bay to Betty's Bay) Acrochaetium reductum (Rosenvinge) G.Hamel 1927, syn. Chantransia reducta Rosenvinge 1909,M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=2315; searched on 26 February 2012 (Between False Bay and Plettenberg Bay) Acrochaetium secundatum (Lyngbye) Nägeli 1858, syn. Callithamnion daviesii var. secundatum Lyngbye 1819,M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=365; searched on 26 February 2012 (Namibia to False Bay) Acrochaetium tenuissimum (F.S.Collins) Papenfuss 1945, syn. Chantransia virgatula f. tenuissima F.S.Collins in Collins, Holden & Setchell 1900,Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=5166; searched on 26 February 2012 (Groot Bergriver estuary in Velddrif and Estuarine environment in Transkei) Audouinella occulta H.Stegenga 1985,Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=40674; searched on 26 February 2012 (Hout Bay) Audouinella monorhiza (Stegenga) Garbary 1987, syn. Colaconema monorhiza Stegenga 1985,Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=60832; searched on 26 February 2012 (Noordhoek and Olifantsbos, Cape Peninsula) Audouinella pectinata (Kylin) Papenfuss 1945, syn. Chantransia pectinata Kylin, 1906,Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=13795; searched on 26 February 2012 (Doring Bay to Olifantsbos) Audouinella spongicola (Weber-van Bosse) Stegenga 1985, syn. Acrochaetium spongicola Weber-van Bosse 1921,Wendy Guiry in Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=17647; searched on 26 February 2012 (Hout Bay to Bird Island, Eastern Province)

Order Balliales

Family Balliaceae Ballia callitricha (C.Agardh) Kützing 1843, syn. Sphacelaria callitricha C.Agardh 1824,Wendy Guiry in Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=2983; searched on 26 February 2012 (West side of Cape Peninsula to Cape Agulhas) Ballia sertularioides (Suhr) Papenfuss 1940, syn. Callithamnion sertularioides Suhr 1840,Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=3553; searched on 26 February 2012 (Lüderitz in Namibia to Hout Bay, Southern African endemic)

Order Bonnemaisoniales

Family Bonnemaisoniaceae Asparagopsis armata Harvey 1855syn. Falkenbergia rufolanosa (Harvey) F.Schmitz in Engler & Prantl 1897,M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/search/species/detail/?species_id=6; searched on 26 February 2012 (Platbank, Cape Peninsula eastwards)