• Chlorella M.Beijerinck, 1890
• Chlorella Stechow, 1921 accepted as Haeckelia Carus, 1863
• Chlorella acuminata Gerneck, 1907
• Chlorella angustoellipsoidea N.Hanagata & Chihara, 1997 accepted as Chloroidium angusto-ellipsoideum (Hanagata & Chihara) Darienko, Gustavs, Mudimu, Menendez, Schumann, Karsten, Friedl & Proschold, 2010
• Chlorella anitrata
• Chlorella anitrata var. minor
• Chlorella antarctica (F.E.Fritsch) Wille, 1924
• Chlorella asymmetrica Mainx, 1928 (uncertain)
• Chlorella aureoviridis Meyer, 1932 accepted as Chlorella luteoviridis Chodat, 1913 accepted as Jaagichlorella luteoviridis (Chodat) Darienko & Pröschold, 2019
• Chlorella autotrophica Shihira & R.W.Krauss, 1965 accepted as Chlorella vulgaris var. autotrophica (Shihira & Krauss) Fott & Nováková, 1969
• Chlorella bacteroidea Hortobágyi, 1960
• Chlorella botryoides J.B.Petersen, 1932
• Chlorella brasiliensis Almeida & C.L.Silva, 1946 (uncertain)
• Chlorella caldaria (Tilden) M.B.Allen, 1954 accepted as Cyanidium caldarium (Tilden) Geitler, 1933
• Chlorella candida Shihira & R.W.Krauss, 1965 accepted as Chlorella vulgaris Beijerinck, 1890
• Chlorella capsulata R.R.L.Guillard, Bold & F.J.MacEntee, 1975 accepted as Schizochlamydella capsulata (R.R.L.Guillard, Bold & F.J.MacEntee) Shin Watanabe, 1977
• Chlorella chlorelloides (Naumann) C.Bock, L.Krienitz & T.Pröschold, 2011
• Chlorella cladoniae Chodat, 1913
• Chlorella coelastroides Chodat, 1913 (uncertain)
• Chlorella colonialis C.Bock, Krienitz & Pröschold, 2011
• Chlorella communis Artari, 1906 accepted as Chlorella vulgaris Beijerinck, 1890
• Chlorella conductrix (K.Brandt) Beyerinck, 1890 accepted as Micractinium conductrix (K.Brandt) Pröschold & Darienko, 2011
• Chlorella conglomerata (Artari) Oltmanns, 1904
• Chlorella desiccata Unknown authority (uncertain)
• Chlorella ellipsoidea Gerneck, 1907 accepted as Chloroidium ellipsoideum (Gerneck) Darienko, Gustavs, Mudimu, Menendez, Schumann, Karsten, Friedl & Proschold, 2010
• Chlorella ellipsoidea f. antarctica Wille, 1912
• Chlorella ellipsoidea var. minor L.Moewus
• Chlorella elongata (Hindák) C.Bock, Krienitz & Pröschold, 2011
• Chlorella emersonii Shihira & R.W.Krauss, 1965 accepted as Graesiella emersonii (Shihara & R.W.Krauss) H.Nozaki, M.Katagiri, M.Nakagawa, K.Aizawa & M.M.Watanabe, 1995
• Chlorella emersonii var. globosa Shihira & R.W.Krauss, 1965 accepted as Coelastrella vacuolata (I. Shihara & R.W. Krauss) E.Hegewald & N.Hanagata, 2002
• Chlorella emersonii var. rubescens (P.J.L.Dangeard) Fott, Lochead & Clemençon, 1975 accepted as Halochlorella rubescens P.J.L.Dangeard, 1966
• Chlorella filigera (Chun, 1880) accepted as Haeckelia filigera (Chun, 1880)
• Chlorella fusca Shihira & R.W.Krauss, 1965 accepted as Desmodesmus abundans (Kirchner) E.H.Hegewald, 2000
• Chlorella fusca var. rubescens (P.J.L.Dangeard) Kessler, Czygan, Fott & Nováková, 1968 accepted as Halochlorella rubescens P.J.L.Dangeard, 1966
• Chlorella fusca var. vacuolata I.Shihira & R.W.Krauss, 1965 accepted as Coelastrella vacuolata (I. Shihara & R.W. Krauss) E.Hegewald & N.Hanagata, 2002
• Chlorella genevensis Chodat, 1909 (uncertain)
• Chlorella gloriosa Molinari & Calvo-Pérez, 2015 accepted as Chlorella salina Kufferath, 1919
• Chlorella glucotropha Unknown authority (uncertain)
• Chlorella heliozoae Pröschold & Darienko, 2011
• Chlorella homosphaera Skuja, 1948 accepted as Mychonastes homosphaera (Skuja) Kalina & Puncochárová, 1987
• Chlorella infusionum Beijerinck, 1890
• Chlorella kessleri Fott & Nováková, 1969 accepted as Parachlorella kessleri (Fott & Nováková) Krienitz, E.H.Hegewald, Hepperle, V.Huss, T.Rohr & M.Wolf, 2004
• Chlorella koettlitzii (Fritsch) Wille, 1924 (uncertain)
• Chlorella kolkwitzii Naumann, 1919 accepted as Siderocelis kolkwitzii (Naumann) Fott, 1934
• Chlorella lacustris Chodat, 1913 (uncertain)
• Chlorella lewinii C.Bock, Krienitz & Pröschold, 2011
• Chlorella lichina Chodat, 1913 accepted as Chloroidium lichinum (Chodat) Darienko & Pröschold, 2018
• Chlorella lobophora V.M.Andreeva, 1973 accepted as Lobosphaeropsis lobophora (V.M.Andreeva) Ettl & Gärtner, 1995
• Chlorella luteoviridis Chodat, 1913 accepted as Jaagichlorella luteoviridis (Chodat) Darienko & Pröschold, 2019
• Chlorella luteoviridis var. lutescens Chodat, 1913 accepted as Chlorella luteoviridis Chodat, 1913 accepted as Jaagichlorella luteoviridis (Chodat) Darienko & Pröschold, 2019
• Chlorella marina Butcher, 1952 accepted as Chloroidium saccharophilum (W.Krüger) Darienko, Gustavs, Mudimu, Menendez, Schumann, Karsten, Friedl & Proschold, 2010
• Chlorella microscopica Beijerinck (uncertain)
• Chlorella miniata (Kützing) Oltmanns, 1904
• Chlorella minor Naumann, 1919 accepted as Siderocelis minor (Naumann) Fott, 1934
• Chlorella minutissima Fott & Nováková, 1969 accepted as Mychonastes homosphaera (Skuja) Kalina & Puncochárová, 1987
• Chlorella mirabilis V.M.Andreeva, 1973 accepted as Edaphochlorella mirabilis (V.M.Andreeva) Darienko & Pröschold, 2016
• Chlorella mucosa Korshikov, 1953 accepted as Korschpalmella mucosa (Korshikov) Hindák, 1988
• Chlorella mutabilis Shihira & R.W.Krauss, 1965 accepted as Chlorella luteoviridis Chodat, 1913 accepted as Jaagichlorella luteoviridis (Chodat) Darienko & Pröschold, 2019
• Chlorella nana Andreoli, Rascio & Casadoro, 1978 (uncertain)
• Chlorella neustonica Bourrelly, 1958 (uncertain)
• Chlorella nocturna Shihira & R.W.Krauss, 1965
• Chlorella nordstedtii Printz, 1938 accepted as Chloroidium ellipsoideum (Gerneck) Darienko, Gustavs, Mudimu, Menendez, Schumann, Karsten, Friedl & Proschold, 2010
• Chlorella oblonga Naumann, 1919 accepted as Siderocelis oblonga (Naumann) Fott, 1934
• Chlorella oocystoides Hindák, 1980
• Chlorella ovalis Butcher, 1952 accepted as Chloroidium saccharophilum (W.Krüger) Darienko, Gustavs, Mudimu, Menendez, Schumann, Karsten, Friedl & Proschold, 2010
• Chlorella pachyderma Printz, 1916
• Chlorella pacifica Ueda, 1927 (uncertain)
• Chlorella paramaecii Loefer, 1951 accepted as Chlorella variabilis I.Shihira & R.W.Krauss, 1965
• Chlorella parasitica (K.Brandt) Beijerinck, 1890 accepted as Choricystis parasitica (K.Brandt) Pröschold & Darienko, 2011
• Chlorella parva
• Chlorella peruviana G.Chacón Roldán, 1980
• Chlorella photophila Shihira & R.W.Krauss, 1965
• Chlorella pituita C.Bock, Krienitz & Pröschold, 2011
• Chlorella pringsheimii Shihara & R.W.Krauss, 1965 accepted as Pseudochlorella pringsheimii (Shihar & Krauss) Darienko, Gustavs, Mudimu, Menendez, Schumann, Karsten, Friedl & Proschold, 2010
• Chlorella protothecoides Krüger, 1894 accepted as Auxenochlorella protothecoides (Krüger) Kalina & Puncochárová, 1987
• Chlorella protothecoides var. acidicola Albertano & Taddei, 1984 accepted as Auxenochlorella protothecoides var. acidicola (Albertano & Taddei) Kalina & Puncochárová, 1987 accepted as Pumiliosphaera acidophila T.Darienko & T.Pröschold, 2015
• Chlorella protothecoides var. communis Shihira & R.W.Krauss, 1965 accepted as Jaagichlorella luteoviridis (Chodat) Darienko & Pröschold, 2019
• Chlorella protothecoides var. galactophila Shihira & R.W.Krauss, 1965
• Chlorella pulchelloides C.Bock, Krienitz & Pröschold, 2011
• Chlorella pyrenoidosa H.Chick, 1903 accepted as Auxenochlorella pyrenoidosa (H.Chick) Molinari & Calvo-Pérez, 2015
• Chlorella pyrenoidosa var. duplex (Kützing) West accepted as Chlorella vulgaris Beijerinck, 1890
• Chlorella pyrenoidosa var. tumidus West
• Chlorella pyrenoidosa var. vacuolata (I.Shihira & R.W.Krauss) A.E.Ergashev, 1979 accepted as Coelastrella vacuolata (I. Shihara & R.W. Krauss) E.Hegewald & N.Hanagata, 2002
• Chlorella regularis (Artari) Oltmanns, 1904 accepted as Coelastrum microporum Nägeli, 1855
• Chlorella regularis var. minima Unknown authority (uncertain)
• Chlorella reisiglii Shin Watanabe, 1977 accepted as Elliptochloris subsphaerica (Reisigl) Ettl & Gärtner, 1995
• Chlorella reniformis S.Watanabe, 1977 accepted as Elliptochloris reniformis H.Ettl & G.Gärtner, 1995
• Chlorella rotunda C.Bock, Krienitz & Pröschold, 2011
• Chlorella rubescens Chodat, 1913 (uncertain)
• Chlorella rubra (Kölliker, 1853) accepted as Haeckelia rubra (Kölliker, 1853)
• Chlorella rugosa J.B.Petersen, 1928
• Chlorella saccharophila (Krüger) Migula, 1907 accepted as Chloroidium saccharophilum (W.Krüger) Darienko, Gustavs, Mudimu, Menendez, Schumann, Karsten, Friedl & Proschold, 2010
• Chlorella saccharophila var. ellipsoidea (Gerneck) Fott & Nováková, 1969 accepted as Chloroidium ellipsoideum (Gerneck) Darienko, Gustavs, Mudimu, Menendez, Schumann, Karsten, Friedl & Proschold, 2010
• Chlorella salina Butcher, 1952 accepted as Chlorella gloriosa Molinari & Calvo-Pérez, 2015 accepted as Chlorella salina Kufferath, 1919
• Chlorella salina Kufferath, 1919
• Chlorella simplex (Artari) Migula, 1907 (uncertain)
• Chlorella singularis C.Bock, Krienitz & Pröschold, 2011
• Chlorella sorokiniana Shihira & R.W.Krauss, 1965
• Chlorella spaerckii Ålvik, 1934 accepted as Droopiella spaerckii (Ålvik) Darienko, Rad-Menéndez, Campbell & Pröschold, 2019
• Chlorella sphaerica Tschermak-Woess, 1988 accepted as Jaagichlorella sphaerica (Tschermak-Woess) Darienko & Pröschold, 2019