Pa
Pabia Friedl & O'Kelly
- Pabia signiensis T.Friedl & O'Kelly 2002
Chlorophyta → Trebouxiophyceae → Trebouxiales → Trebouxiaceae
- Pachycladella P.C.Silva, 1970
Pachysphaera Ostenfeld, 1899
- Pachysphaera pelagica Ostenfeld, 1899
Chlorophyta → Prasinophyceae → Chlorodendrales → Halosphaeraceae
- Palaeoanacystis J.W.Schopf, 1968
- Palmella Lyngbye, 1819
- Palmellaceae
- Palmellochaete Korshikov, 1953
- Palmellopsidaceae Korshikov, 1953
- Palmellopsis Korshikov, 1953
- Palmellosphaerium M.O.P.Iyengar, 1971
- Palmoclathrus Womersley, 1971
- Palmococcus I.Kostikov, T.Darienko, A.Lukesová & L.Hoffmann
- Palmodactylon Naegeli, 1849
- Palmodictyon Kützing, 1845
- Palmogloea Kützing, 1843
- Palmophyllales
- Palmophylloites Straus, 1952
- Pandorina Bory de Saint-Vincent, 1824
- Papenfussiomonas Desikachary, 1972
- Parachlorella L.Krieniz, E.H.Hegewald, D.Hepperle, V.A.R.Huss, T.Rohr & M.Wolf, 2004
- Paracuneatochara Zhen Wang, 1984
- Paradella Maslov
- Paradoxia Svirenko, 1928
- Parakamaena Mamet & Roux
- Parallela E.A.Flint, 1974
- Paramastix Skuja, 1948
- Parapediastrum E.Hegewald, 2005
- Parapolytoma Jameson, 1914
- Parietochloris S.Watanabe & G.L.Floyd, 1990
- Parvocaulis S.Berger, U.Fettweiss, S.Gleissberg, L.B.Liddle, U.Richter, H.Sawitzky & G.C.Zuccarello, 2003
- Pascherina P.C.SIlva, 1959
- Paulschulzia Skuja, 1948
Pe
- Pearsoniella Fritsch & Rich, 1924
- Pectinodesmus Hegewald, Wolf, Keller, Friedl & Krienitz, 2010
- Pectodictyon Taft, 1945
- Pectoralina Bory de Saint-Vincent
- Pediastrites Zalessky
- Pediastrum Meyen, 1829
- Pedinomonadaceae Korschikov, 1938
- Pedinomonadales
- Pedinomonas Korshikov, 1923
- Pedinopera Pascher, 1925
- Pedinoperopsis Korshikov, 1938
- Pedinophyceae
- Pedobesia MacRaild & Womersley, 1974
- Pedodiscus
- Pekiskopora Mamet
- Peltacystia
- Pemphidia Dumortier
- Penicillus Lamarck, 1813
- Peniococcus Woloszynska
- Perachoraella
- Percursaria Bory de Saint-Vincent, 1823
- Periplegmatium Kützing, 1843
- Peterfiella Gerloff, 1940
- Petrosiphon M.A.Howe, 1905
Ph
- Phacomyxa Skuja, 1956
- Phacotaceae Francé, 1894
- Phacotus Perty, 1852
- Phaeophila Hauck, 1876
- Phaeophilaceae D.F. Chappell, C.J. O'Kelly, L.W. Wilcox & G.L. Floyd, 1990
- Phaeophilales
- Phaeostrepte Skuja ex T.Willén
- Phaseolaria Printz, 1921
- Phycopeltis Millardet, 1870
- Phyllariochloris Pascher & Jahoda, 1928
- Phyllerpa (Kützing) Harvey
- Phyllobium Klebs, 1881
- Phyllocardium Korshikov, 1927
- Phyllodictyon J.E.Gray, 1866
- Phyllogloea
- Phyllosiphon Kühn, 1878
- Physocytium Borzì, 1883
- Physolinum Printz, 1921
- Physoporella Steinmann
- Phythelios Frenzel, 1891
Pi
- Piaea Florin
- Pianella
- Picocystis R.A.Lewin, 2001
- Pilidiocystis Bohlin, 1897
- Pilinella Hollenberg, 1971
- Pirula J.W.Snow, 1912
- Pithophora Wittrock, 1877
- Pithophoraceae
Pl
- Placosphaera P.-A.Dangeard, 1889
- Planctococcus Korshikov, 1953
- Planctonema Schmidle, 1903
- Planktococcomyxa I.Kostikov, T.Darienko, A.Lukesová & L.Hoffmann, 2002
- Planktogloea
- Planktosphaerella Reisigl, 1964
- Planktosphaeria G.M.Smith, 1918
- Planochloris Komárek, 1979
- Planophila Gerneck, 1907
- Platydorina Kofoid, 1899
- Pleodorina W.R.Shaw, 1894
- Pleurangium Skuja, 1937
- Pleurastraceae K.R. Mattox & K.D. Stewart
- Pleurastrales
- Pleurastrophyceae
- Pleurastrosarcina H.J.Sluiman & P.C.J.Blommers, 1990
- Pleurastrum Chodat, 1894
- Pleurococcus Meneghini
- Pleurosicyos Corda
- Pleurothamnion Borzì, 1892
- Ploeotila T.Mrozinska-Webb, 1973
Po
- Pocillomonas Steinecke, 1926
- Podohedra Düringer, 1958
- Poloidion Pascher, 1944
Polyasterias A.Meunier, 1910
- Polyasterias problematica (Cleve) Meunier, 1910
Chlorophyta → Prasinophyceae → Chlorodendrales → Halosphaeraceae
Porodica Polyblepharidaceae P.A. Dangeard, 1889
- Amphoraemonas A.Szabados, 1948
- Gyromitus Skuja, 1939
- Korschikoffia Pascher, 1927
- Polyblepharides P.-A.Dangeard, 1888
- Printziella Skvortzov, 1958
- Pseudocardiomonas Bourrelly, 1966
- Stephanoptera P.-A.Dangeard, 1910
- Sycamina Van Tieghem, 1880
Chlorophyta → Prasinophyceae → Pyramimonadales
Polyblepharides P.-A.Dangeard, 1888
- Polyblepharides amylifera (Conrad) H.Ettl, 1982
- Polyblepharides singularis P.-A.Dangeard, 1888
Chlorophyta → Prasinophyceae → Pyramimonadales → Polyblepharidaceae
- Polychaetochloris Pascher, 1940
- Polyedriopsis Schmidle, 1899
- Polyphysaceae Kützing, 1843
- Polysphaera Reisigl, 1964
- Polytoma Ehrenberg, 1831
- Polytomella Aragão, 1910
- pongioplastidium Vischer, 1933
- Porochloris Pascher, 1929
- Poropila
- Poropsis Kützing, 1856
Pr
Prasinochloris Belcher, 1966
- Prasinochloris sessilis J.H.Belcher, 1966
Chlorophyta → Prasinophyceae → Pyramimonadales → Pyramimonadaceae
Prasinocladus Kuckuck, 1894
- Prasinocladus indicus Weber-van Bosse, 1913
- Prasinocladus lubricus Kuckuck, 1894
- Prasinocladus lubricus f. subsalsa Zimmermann, 1923
Chlorophyta → Prasinophyceae → Chlorodendrales → Chlorodendraceae
Porodica Prasinococcaceae
- Prasinococcus H.Miyashita & M.Chihara, 1993
- Prasinoderma T.Hasegawa & M.Chihara, 1996
Chlorophyta → Prasinophyceae → Prasinococcales
Red Prasinococcales
- Porodica Prasinococcaceae
Prasinococcus H.Miyashita & M.Chihara, 1993
- Prasinococcus capsulatus H.Miyashita & M.Chihara
Chlorophyta → Prasinophyceae → Prasinococcales → Prasinococcaceae
Prasinoderma T.Hasegawa & M.Chihara, 1996
- Prasinoderma coloniale T.Hasegawa & M.Chihara, 1996
- Prasinoderma singularis Jouenne, 2011
Chlorophyta → Prasinophyceae → Prasinococcales → Prasinococcaceae
Razred Prasinophyceae T. Christensen ex Ø. Moestrup & J. Throndsen, 1988
- Red Chlorodendrales
- Red Halosphaerales
- Red Prasinococcales
- Red Prasinophyceae incertae sedis
- Red Pseudoscourfieldiales
- Red Pyramimonadales
Red Prasinophyceae incertae sedis
- Dictyotidium Eisenack, 1955
- Prasiococcus Vischer, 1953
- Prasiola Meneghini, 1838
- Prasiolaceae Blackman & Tansley, 1902
- Prasiolales
- Prasiolales incertae sedis
- Prasiolopsis Vischer, 1953
- Printziella Skvortzov, 1958
- Printzina R.H.Thompson & D.E.Wujek, 1992
- Protoaceromonas Skvortzov, 1968
- Protochroomonas Skvortzov, 1968
- Protoderma Kützing, 1843
- Protomonostroma K.L.Vinogradova, 1969
- Protosiphon Klebs, 1886
- Protosiphonaceae
- Prototheca W.Krüger, 1894
- Provasoliella A.R.Loeblich III, 1967
Ps
- Psephotaxus West & G.S.West, 1897
- Pseudagloë (Pascher) K.I.Meyer, 1952
- Pseudendocloniopsis Vischer, 1933
- Pseudendoclonium Wille, 1901
- Pseudobohlina Bourrelly, 1948
- Pseudobryopsis Berthold, 1904
- Pseudocardiomonas Bourrelly, 1966
- Pseudocarteria H.Ettl, 1958
- Pseudochaete West & G.S.West, 1903
- Pseudocharacium Korshikov, 1953
- Pseudochlorangium Hindák, 1998
- Pseudochlorella J.W.G.Lund, 1955
- Pseudochlorococcum P.A.Archibald, 1970
- Pseudochlorodesmis Børgesen, 1925
- Pseudochlorothecium Korshikov, 1953
- Pseudocladophora Boedeker & Leliaert, 2012
- Pseudocladophoraceae
- Pseudococcomyxa Korshikov, 1953
- Pseudocodiaceae
- Pseudocodiaceae L. Hillis-Colinvaux
- Pseudocodium Weber-van Bosse, 1896
- Pseudoderbesia E.Calderon & Schnetter, 1991
- Pseudodictyochloris Vinatzer, 1975
- Pseudodidymocystis Hegewald & Deason, 1989
- Pseudofurcilla Jane, 1943
- Pseudolatochara Zhen Wang, 1978
- Pseudomarvania Eliás & Neustupa, 2009
- Pseudomoellerina Zhen Wang, 1984
- Pseudomuriella N.Hanagata, 1998
- Pseudoneochloris Watanabe, Himizu, Lewis, Floyd & Fuerst, 2000
- Pseudopediastrum E.Hegewald, 2005
- Pseudopedinomonas Skvortzov, 1971
- Pseudopenicillus O.Dragastan et al., 1997
- Pseudoplanophila H.Ettl & G.Gärtner, 1987
- Pseudopleurococcus J.Snow, 1899
- Pseudopringsheimia Wille, 1909
- Pseudoprostratum A.K.Mahato & P.Mahat, 1993
- Pseudoquadrigula E.N.Lacoste de Díaz, 1973
- Pseudoschizomeris T.Deason & H.Bold, 1960
- Pseudoschroederia Hegewald & Schnepf, 1986
Pseudoscourfieldia I.Manton, 1975
- Pseudoscourfieldia marina (J.Throndsen) Manton, 1975
Chlorophyta → Prasinophyceae → Pseudoscourfieldiales → Pycnococcaceae
Pseudoscourfieldiales
- Porodica Pycnococcaceae R.R.L. Guillard
- Pseudosiderocelopsis Massalski, Mronzinska & Olech, 1999
- Pseudosphaerocystis Woronichin, 1931
- Pseudospongiococcum Gromov & Mamkaeva, 1974
- Pseudostephanoptera Proshkina-Lavrenko, 1945
- Pseudostichococcus L.Moewus, 1951
- Pseudotetracystis R.D.Arneson, 1973
- Pseudotetraspora Wille, 1906
- Pseudotetrastrum Hindák, 1977
- Pseudothrix Hanic & S.C.Lindstrom, 2008
- Pseudotrinocladus
- Pseudotrochiscia Vinatzer, 1975
- Pseudoudotea O.Dragastan, D.K.Richter, B.Kube, M.Popa, A.Sarbu & I.Ciugulea
- Pseudoudoteaceae
Pseudulvella Wille, 1909
- Pseudulvella americana (J. Snow) Wille
- Pseudulvella applanata Setchell & N.L. Gardner
- Pseudulvella consociata Setchell & N.L. Gardner
Chlorophyta → Chlorophyceae → Chaetopeltidales → Chaetopeltidaceae
- Psichohormium
Pt
- Pteromonas Seligo, 1887
Pterosperma Pochet, 1893
- Pterosperma citriforme Parke
- Pterosperma cristatum Schiller, 1925
- Pterosperma cuboides Gaarder, 1954
- Pterosperma dictyon (Jørgensen) Ostenfeld, 1901
- Pterosperma eurypteron Parke
- Pterosperma hemisphaericum Meunier, 1910
- Pterosperma inornatum Parke
- Pterosperma joergensenii Schiller
- Pterosperma jorgensenii J.Schiller, 1925
- Pterosperma marginatum Gaarder, 1954
- Pterosperma michaelsarsii (Gaarder) Parke & Boalch
- Pterosperma moebii (Jørgensen) Ostenfeld, 1901
- Pterosperma nationalis Lohmann, 1904
- Pterosperma ornatum J.Schiller, 1925
- Pterosperma parallelum Gaardner, 1938
- Pterosperma polygonum Ostenfeld, 1902
- Pterosperma porosum Parke
- Pterosperma rotondum Pouchet
- Pterosperma undulatum Ostenfeld, 1902
- Pterosperma vanhoeffenii (Jørgensen) Ostenfeld, 1899
Chlorophyta → Prasinophyceae → Halosphaerales → Pterospermataceae
Porodica Pterospermataceae
- Polyasterias A.Meunier, 1910
- Pterosperma Pochet, 1893
Chlorophyta → Prasinophyceae → Halosphaerales
- Pterosphaera
- Pterosphaera Jörgensen, 1899
Pu
- Pulchrasphaera Deason, 1967
- Pulvinococcus Tschermak, 1943
Py
Porodica Pycnococcaceae R.R.L. Guillard
- Pseudoscourfieldia I.Manton, 1975
- Pycnococcus R.R.L.Guillard, 1991
Chlorophyta → Prasinophyceae → Pseudoscourfieldiales
Pycnococcus R.R.L.Guillard, 1991
- Pycnococcus guillardii Myklestad
- Pycnococcus provasolii R.R.L.Guillard, 1991
Chlorophyta → Prasinophyceae → Pseudoscourfieldiales → Pycnococcaceae
- Pyramichlamys H.Ettl & O.Ettl, 1959
Porodsia Pyramimonadaceae Korshikov, 1938
- Angulomonas Skvortzov, 1968
- Coccopterum P.C.Silva
- Cymbomonas J.Schiller, 1913
- Halosphaera K.J.F.Schmitz, 1878
- Pocillomonas Steinecke, 1926
- Prasinochloris Belcher, 1966
- Protoaceromonas Skvortzov, 1968
- Protochroomonas Skvortzov, 1968
- Pyramimonas Schmarda, 1849
- Tasmanites E.T.Newton, 1875
- Trichloridella P.C.Silva, 1970
Chlorophyta → Prasinophyceae → Pyramimonadales
Red Pyramimonadales
- Porodica Polyblepharidaceae P.A. Dangeard, 1889
- Porodica Pyramimonadaceae Korshikov, 1938
- Pyramimonadophyceae
Pyramimonas Schmarda, 1849
- Podrod Pyramimonas (Pyramimonas)
- Pyramimonas (Pyramimonas) octopus Moestrup & Aa. Kristiansen
- Pyramimonas (Pyramimonas) propulsa Moestrup & Hill
- Podrod Pyramimonas (Trichocystis)
- Pyramimonas (Trichocystis) australis
- Pyramimonas (Trichocystis) grossii Parke, 1949
- Podrod Pyramimonas (Vestigifera)
- Pyramimonas (Vestigifera) disomata McFadden, Hill & Wetherbee
- Pyramimonas (Vestigifera) mantoniae Moestrup & Hill
- Pyramimonas (Vestigifera) tychotreta
- Pyramimonas adriaticus J.Schiller, 1913
- Pyramimonas angulata N.Carter, 1937
- Pyramimonas aurea S.Suda, 2004
- Pyramimonas aurita N.Daugbjerg, 1993
- Pyramimonas australis Andreoli & Moro, 2002
- Pyramimonas chlorina
- Pyramimonas circulanae Pennick
- Pyramimonas cirolanae N.C.Pennick, 1982
- Pyramimonas cordata G.I.McFadden, 1986
- Pyramimonas cyclotreta N.Daugbjerg & Moestrup, 1992
- Pyramimonas cyrtoptera Daugbjerg, 1992
- Pyramimonas delicatula B.M.Griffiths, 1909
- Pyramimonas dichotoma N.Daugbjerg, 1993
- Pyramimonas disomata Butcher ex McFadden, Hill & Wetherbee, 1986
- Pyramimonas formosa S.D.Sym & R.N.Pienaar, 1999
- Pyramimonas gelidicola McFadden, Moestrup & Wetherbee, 1982
- Pyramimonas igloolikensis N.Daugbjerg, 1993
- Pyramimonas impressa J.Schiller, 1925
- Pyramimonas inconstans Hodgetts, 1920
- Pyramimonas janetae R.E.Norris, 1964
- Pyramimonas longicauda L.Van Meel, 1969
- Pyramimonas marina (Wulff) Verschaffelt
- Pyramimonas mitra Ø.Moestrup & D.R.A.Hill, 1991
- Pyramimonas moestrupii McFadden, 1986
- Pyramimonas mucifera Sym & Pienaar, 1991
- Pyramimonas nanella Conrad & Kufferath, 1954
- Pyramimonas nansenii Braarud, 1935
- Pyramimonas nephroidea McFadden, 1986
- Pyramimonas obovata N.Carter, 1937
- Pyramimonas occidentalis N.C.Pennick, 1982
- Pyramimonas octociliata N.Carter, 1937
- Pyramimonas olivacea N.Carter, 1937
- Pyramimonas oltmannsii J.Schiller, 1925
- Pyramimonas parkeae R.E.Norris & B.R.Pearson, 1975
- Pyramimonas pisum Conrad & Kufferath, 1954
- Pyramimonas plurioculata Butcher, 1959
- Pyramimonas pseudoparkeae R.N.Pienaar & Aken, 1985
- Pyramimonas quadrifolia N.Daugbjerg, 1993
- Pyramimonas robusta Pienaar & Sym, 1997
- Pyramimonas salina Kisseljov, 1931
- Pyramimonas semiglobosa Pascher, 1927
- Pyramimonas spinifera N.C.Pennick, 1983
- Pyramimonas tertrarhynchus Schmarda
- Pyramimonas tetralampas W.Conrad & H.Kufferath, 1954
- Pyramimonas tetrarhynchus Schmarda, 1849
- Pyramimonas torta W.Conrad & H.Kufferath, 1954
- Pyramimonas tychotreta Daugbjerg, 2000
- Pyramimonas virginica Pennick, 1977
Chlorophyta → Prasinophyceae → Pyramimonadales → Pyramimonadaceae
- Pyrobotrys Arnoldi, 1916