| Name | Author | Source | Citation | Year |
|---|
| Cosmarium dorsitruncatum var. pseudoscenedesmus | (W. West & G.S. West) Krieger & Gerloff | image |
| Cosmarium pseudoscenedesmus | West & West | image |
| Cosmarium scenedesmus | Delponte | image |
| Cosmarium scenedesmus f. glabrum_('glabra') | Schmidle | image |
| Cosmarium scenedesmus f. minus_('minor') | Thomasson | image |
| Cosmarium scenedesmus f. punctatum_('punctata') | W. West | image |
| Cosmarium scenedesmus var. dorsitruncatum | Nordstedt | image |
| Cosmarium scenedesmus var. dorsitruncatum | Nordstedt | image |
| Cosmarium scenedesmus var. intermedium | Gutwinski | image |
| Cosmarium scenedesmus var. punctatum | W.B. Turner | image |
| EUSCENEDESMUS | Printz | image |
| EUSCENEDESMUS | R. Chodat | image |
| SCENEDESMUS | Meyen | image |
| SCENEDESMUS subg. DESMODESMUS | R. Chodat | Z. Hydrol. | 3: 111 | 1926 |
| SCENEDESMUS | | image |
| SCENEDESMUS | | image |
| SCENEDESMUS | | image |
| SCENEDESMUS | | image |
| SCENEDESMUS | | image |
| SCENEDESMUS | | image |
| SCENEDESMUS | | image |
| SCENEDESMUS | | image |
| Scenedesmus | | image |
| Scenedesmus abundans | (Kirchn.) Chodat | image |
| Scenedesmus abundans f. bicaudatus | (Hortobagyi) Compere | image |
| Scenedesmus abundans var. armata | Liebetanz | image |
| Scenedesmus abundans var. asymmetricus_('asymmetrica') | (Schroeder) G.M. Smith | image |
| Scenedesmus abundans var. bicaudatus | Proshkina-Lavrenko | Trudy Kharkov. Obshch. Isp. Prir. | 50{1}: 34, fig. 1 | 1925 |
| Scenedesmus abundans var. brevicauda | G.M. Smith | image |
| Scenedesmus abundans var. hyperabundans | (Gutwinski) Compere | image |
| Scenedesmus abundans var. indica | Kamat | image |
| Scenedesmus abundans var. longicauda | G.M. Smith | image |
| Scenedesmus abundans var. peruvianus | (E. Hegewald) E. Hegewald in E. Hegewald & E. Schnepf | Arch. Protistenk. | 139: 176 | 1991 |
| Scenedesmus abundans var. skujae | Compere | image |
| Scenedesmus abundans var. spicatiformis 'Chodat 1926' | | image |
| Scenedesmus abundans var. spicatus | (West & West) G.M. Smith | image |
| Scenedesmus abundans var. typicus 'G.M. | Smith 1916' | image |
| Scenedesmus aciculatus | Gonzalez Guerrero | image |
| Scenedesmus aculeato-granulatus f. heterospinosus | Hortobagyi | image |
| Scenedesmus aculeato-granulatus | Hortobagyi | image |
| Scenedesmus aculeato-granulatus var. bicaudatus | Hortobagyi | image |
| Scenedesmus aculeato-granulatus var. spinosus | Hortobagyi | image |
| Scenedesmus aculeolatus f. brevior | W. West | image |
| Scenedesmus aculeolatus f. octocellularis | Reinsch | Int. Polarforsch. 1882-1883, Deutsch. Exped. Ergebn. | 2: 338, pl. I: fig. 6 | 1890 |
| Scenedesmus aculeolatus | P.F. Reinsch | image |
| Scenedesmus aculeolatus | Reinsch | J. Linn. Soc., London. Botany | 16: 238, pl. VI, figs. 1, 2 | 1877 |
| Scenedesmus aculeolatus var. bigranulatus | Pankow | image |
| Scenedesmus aculeolatus var. granulatus | (Hortobagyi) Pankow | image |
| Scenedesmus aculeolatus var. heterogranulatus | (Hortobagyi) Pankow | image |
| Scenedesmus aculeolatus var. kolhapurensis | (Kamat) Pankow | image |
| Scenedesmus acuminatus | (Lagerheim) Chodat | image |
| Scenedesmus acuminatus f. contortus | L. Krienitz | Arch. Hydrobiol. Suppl. | 78 (Algol. Stud. 46): 10, fig. 3c, d | 1987 |
| Scenedesmus acuminatus f. costulatus | Hortobagyi | image |
| Scenedesmus acuminatus f. globosus | Hortobagyi & Németh | image |
| Scenedesmus acuminatus f. globosus | T. Hortobágyi | Stud. Biol. Hung. | 8: 51, 71, figs. 322, 325, 330, 332 | 1969 |
| Scenedesmus acuminatus f. globosus | T. Hortobagyi | image |
| Scenedesmus acuminatus f. globulosus | Uherkovich | image |
| Scenedesmus acuminatus f. gyoparosiensis | (Kiss) Uherkovich | image |
| Scenedesmus acuminatus f. maximus | (Uherkovich) Uherkovich | image |
| Scenedesmus acuminatus f. procerus | T. Hortobágyi | Stud. Biol. Hung. | 8: 52, 71, figs. 331, 333 | 1969 |
| Scenedesmus acuminatus f. procerus | T. Hortobagyi | image |
| Scenedesmus acuminatus f. tetradesmoides | (G.M. Smith) Korshikov | image |
| Scenedesmus acuminatus f. tortuosus | (Skuja) Korshikov | image |
| Scenedesmus acuminatus var. alternans | Svirenko | image |
| Scenedesmus acuminatus var. asymmetricus | Hortobagyi | image |
| Scenedesmus acuminatus var. bernardii | (Smith) Dedusenko | image |
| Scenedesmus acuminatus var. biseriatus | Reinhard | image |
| Scenedesmus acuminatus var. elongatus | G.M. Smith | image |
| Scenedesmus acuminatus var. falcatus | Ooshima | image |
| Scenedesmus acuminatus var. javanensis | (Chodat) Couté & Rousselin | image |
| Scenedesmus acuminatus var. javanensis | (Chodat) Uherkovich | image |
| Scenedesmus acuminatus var. maximus | (Uherkovich) Ergashev | image |
| Scenedesmus acuminatus var. minor | G.M. Smith | image |
| Scenedesmus acuminatus var. tetradesmoides | G.M. Smith | image |
| Scenedesmus acuminatus var. tortuosus | (Skuja) Ooshima | image |
| Scenedesmus acunae | Comas Gonzalez | image |
| Scenedesmus acutiformis | B. Schröder | image |
| Scenedesmus acutiformis f. major | Kiselev | image |
| Scenedesmus acutiformis f. minor | Hollerbach | image |
| Scenedesmus acutiformis | Schröder | ForschBer. Biol. Stat. Plön | 5: 45, pl. II: fig. 4 | 1897 |
| Scenedesmus acutiformis var. bicaudatus | Guglielmetti | Nuova Notarisia | 21: 31 | 1910 |
| Scenedesmus acutiformis var. bicaudatus | Hortobagyi | image |
| Scenedesmus acutiformis var. bispinosus | Proshkina-Lavrenko | image |
| Scenedesmus acutiformis var. brasiliensis | (Bohlin) West & West | image |
| Scenedesmus acutiformis var. costatus | (Huber-Pestalozzi) Pankow | image |
| Scenedesmus acutiformis var. quadricauda | Proshkina-Lavrenko | image |
| Scenedesmus acutiformis var. spinifer_('spiniferum') | West & West | image |
| Scenedesmus acutiformis var. tricostatus | R. Chodat | Z. Hydrol. | 3: 199, fig. 96 | 1926 |
| Scenedesmus acutus f. alternans | Hortobagyi | image |
| Scenedesmus acutus f. antenniformis | (Uherkovich) Uherkovich | image |
| Scenedesmus acutus f. costulatus | (Chodat) Uherkovich | image |
| Scenedesmus acutus f. defectus | Hollerbach | image |
| Scenedesmus acutus f. irregularis | Hortobagyi | image |
| Scenedesmus acutus f. semiellipticus | (Uherkovich) Uherkovich | image |
| Scenedesmus acutus f. symmetricus | Hortobagyi | image |
| Scenedesmus acutus f. tetradesmiformis | (Woloszynska) Uherkovich | image |
| Scenedesmus acutus | Meyen | image |
| Scenedesmus acutus var. antenniformis | Uherkovich | image |
| Scenedesmus acutus var. biseriatus | Kützing | image |
| Scenedesmus acutus var. costulatus | (Chodat) Uherkovich | image |
| Scenedesmus acutus var. dimorphus | (Turp.) Rabenhorst | image |
| Scenedesmus acutus var. fusiformis | (Meneghini) Brebisson | image |
| Scenedesmus acutus var. globosus | Hortobagyi | image |
| Scenedesmus acutus var. inordinatus | Kützing | image |
| Scenedesmus acutus var. obliquus | (Turpin) Rabenhorst | image |
| Scenedesmus acutus var. obliquus | Kützing | image |
| Scenedesmus acutus var. rectus | Hortobagyi | image |
| Scenedesmus aequicaudatus | Hortobagyi | image |
| Scenedesmus alatus | Jao | image |
| Scenedesmus aldavei | Hegewald | image |
| Scenedesmus allorgei | Bourrelly | image |
| Scenedesmus almatensis | Ergashev | image |
| Scenedesmus alpinus | R. Chodat | image |
| Scenedesmus alternans | Reinsch | image |
| Scenedesmus alternans var. apiculatus | W. West & G.S. West | J. Roy. Microscop. Soc. | 1894: 16, pl. II: fig. 38 | 1894 |
| Scenedesmus alternans var. apiculatus | West & West | image |
| Scenedesmus alternans var. arcuatus | (Lemmermann) Fott & Komarek | image |
| Scenedesmus alternans var. disjunctus | (Borge) Ahlstrom | image |
| Scenedesmus alternans var. minor | Hansgirg | image |
| Scenedesmus alternans var. platydiscus | (G.M. Smith) Fott & Komarek | image |
| Scenedesmus alternans var. prescottii | B. Fott & J. Komárek | Preslia | 32: 127, pl. VIII: fig. 5 | 1960 |
| Scenedesmus alternans var. prescottii | B. Fott & J. Komarek | image |
| Scenedesmus ambuehlii | F. Hindák | Biologia, Bratislava | 49: 476, figs. 1, 2 | 1994 |
| Scenedesmus anhuiensis | S.S. Wang | Acta Phytotax. Sin. | 27: 311, figs. 1:1,2 | 1989 |
| Scenedesmus annandalei | Brühl & Biswas | image |
| Scenedesmus anomalus | (G.M. Smith) Ahlstrom & Tiffany | image |
| Scenedesmus anomalus f. granulatus | Hortobagyi | image |
| Scenedesmus anomalus var. acaudatus | Hortobagyi | image |
| Scenedesmus anomalus var. bicaudatus | Hortobagyi | image |
| Scenedesmus anomalus var. tetraspinosus | Hortobagyi | image |
| Scenedesmus antennatus | Brebisson | image |
| Scenedesmus antennatus f. alternans | Woloszynska | image |
| Scenedesmus antennatus f. annulata | Woloszynska | image |
| Scenedesmus antennatus f. arcuata | Woloszynska | image |
| Scenedesmus antennatus f. linearis | Woloszynska | image |
| Scenedesmus antennatus f. tetraedrica | Woloszynska | image |
| Scenedesmus antennatus var. rectus | Wolle | image |
| Scenedesmus antennatus var. tetradesmiformis | Woloszynska | image |
| Scenedesmus antillarum | Comas Gonzales | image |
| Scenedesmus apiculatus | (W. West & G.S. West) Chodat | Z. Hydrol. | 3: 169 | 1926 |
| Scenedesmus apiculatus | (W. West & G.S. West) R. Chodat | image |
| Scenedesmus apiculatus | Corda | Alman. Carlsbad | 8: 195, pl. II: fig. 15 | 1838 |
| Scenedesmus apiculatus f. disciformis | Uherkovich | image |
| Scenedesmus apiculatus var. alternans | Ergashev | image |
| Scenedesmus apiculatus var. capitatus | (G.M. Smith) Pankow | image |
| Scenedesmus apiculatus var. granulatus | Pankow | image |
| Scenedesmus apiculatus var. indicus | Hortobagyi | image |
| Scenedesmus apiculatus var. irregularis | Dedusenko-Shchegoleva | image |
| Scenedesmus arcuatus | (Lemmermann) Lemmermann | image |
| Scenedesmus arcuatus f. gracilis | T. Hortobágyi | Acta Bot. Acad. Sci. Hung. | 13: 24, 40, fig. 26 | 1967 |
| Scenedesmus arcuatus f. gracilis | T. Hortobagyi | image |
| Scenedesmus arcuatus f. granulatus | Hortobagyi & Németh | image |
| Scenedesmus arcuatus f. granulatus_('granulata') | (Schmidle) Deflandre | image |
| Scenedesmus arcuatus f. minor | Cedergren | image |
| Scenedesmus arcuatus f. prescottii | (B. Fott & J. Komárek) H. Kuosa | Arch. Hydrobiol. Suppl. | 78 (Algol. Stud. 49): 478 | 1988 |
| Scenedesmus arcuatus f. prescottii | (B. Fott & J. Komarek) H. Kuosa | image |
| Scenedesmus arcuatus f. quadrigranulatus | Hortobagyi | image |
| Scenedesmus arcuatus f. spinosus | Hortobagyi & Németh | image |
| Scenedesmus arcuatus var. allahabadensis | Chadha & Pandey | image |
| Scenedesmus arcuatus var. capitatus | G.M. Smith | image |
| Scenedesmus arcuatus var. disjunctus | Borge | image |
| Scenedesmus arcuatus var. gracilis | (T. Hortobágyi) F. Hindák | Biol. Práce Slov. Akad. Vied | 36: 64 | 1990 |
| Scenedesmus arcuatus var. gracilis | (T. Hortobagyi) F. Hindak | image |
| Scenedesmus arcuatus var. irregularis | E.A. Flint | image |
| Scenedesmus arcuatus var. platydiscus_('platydisca') | G.M. Smith | Trans. Wis. Acad. Sci. Arts & Lett. | 18: 451, pl. XXX: figs. 101-105 | 1916 |
| Scenedesmus aristatus | R. Chodat | image |
| Scenedesmus aristatus var. danubianus | Uherkovich | image |
| Scenedesmus aristatus var. major | L. Peterfi | image |
| Scenedesmus armatus | (R. Chodat) R. Chodat | image |
| Scenedesmus armatus f. bicaudato-granulatus | Hortobagyi & Németh | image |
| Scenedesmus armatus f. bicaudatus | Hortobagyi | image |
| Scenedesmus armatus f. bicaudatus | Uherkovich | image |
| Scenedesmus armatus f. brevicaudatus | Peterfi | image |
| Scenedesmus armatus f. cinkotaensis | Hortobagyi | image |
| Scenedesmus armatus f. crassicaudatus | Hortobagyi | image |
| Scenedesmus armatus f. curvata | Borge | image |
| Scenedesmus armatus f. deflexus | Peterfi | image |
| Scenedesmus armatus f. elegans | Hortobagyi | image |
| Scenedesmus armatus f. elegans | Uherkovich | image |
| Scenedesmus armatus f. granulatus | Hortobagyi | image |
| Scenedesmus armatus f. granulatus | Hortobagyi | image |
| Scenedesmus armatus f. granulatus_('granulata') | Deflandre | image |
| Scenedesmus armatus f. major | Uherkovich | image |
| Scenedesmus armatus f. quadrispinosus | Bourrelly | image |
| Scenedesmus armatus f. retroflexus | Pankow | image |
| Scenedesmus armatus f. semicostatus | Hortobagyi | image |
| Scenedesmus armatus f. simplex | Peterfi | image |
| Scenedesmus armatus var. asymetricus | Bourrelly | image |
| Scenedesmus armatus var. asymetricus | Bourrelly | image |
| Scenedesmus armatus var. asymmetricus | Philipose | image |
| Scenedesmus armatus var. bajaensis | Uherkovich | image |
| Scenedesmus armatus var. bicaudatus | (Guglielmetti) R. Chodat | image |
| Scenedesmus armatus var. boglariensis | Hortobagyi | image |
| Scenedesmus armatus var. brevicaudatus | (Hortobagyi) Pankow | image |
| Scenedesmus armatus var. brevicaudatus | (Peterfi) Hegewald | image |
| Scenedesmus armatus var. chodatii | G.M. Smith | image |
| Scenedesmus armatus var. ciliata | Mosto | image |
| Scenedesmus armatus var. compactus | Uherkovich | image |
| Scenedesmus armatus var. costatus | (Teiling) Pankow | image |
| Scenedesmus armatus var. crassi-heterocaudatus | Hortobagyi | image |
| Scenedesmus armatus var. dispar | Philipose | image |
| Scenedesmus armatus var. ecornis | R. Chodat | image |
| Scenedesmus armatus var. ecornis | Woloszynska | image |
| Scenedesmus armatus var. exaculeatus | R. Chodat | image |
| Scenedesmus armatus var. incertus_('incerta') | Chodat | image |
| Scenedesmus armatus var. indicus | Pankow | image |
| Scenedesmus armatus var. indicus | R. Chodat | image |
| Scenedesmus armatus var. interruptecostatus | (Masjuk) Pankow | image |
| Scenedesmus armatus var. longispina | (R. Chodat) E. Hegewald & F. Hindák in E. Hegewald, F. Hindák, & E. Schnepf | Beih. Nova Hedwigia | 99: 20 | 1990 |
| Scenedesmus armatus var. longispina | (R. Chodat) E. Hegewald & F. Hindak | image |
| Scenedesmus armatus var. major | G.M. Smith | image |
| Scenedesmus armatus var. microspinosus | (T. Hortobágyi) E. Hegewald & F. Hindák in E. Hegewald, F. Hindák, & E. Schnepf | Beih. Nova Hedwigia | 99: 22 | 1990 |
| Scenedesmus armatus var. microspinosus | E. Hegewald & F. Hindak | image |
| Scenedesmus armatus var. pluricostatus | Bourrelly | image |
| Scenedesmus armatus var. pluricostatus | P. Bourrelly in P. Bourrelly & E. Manguin | Terre & Vie | 97: 292, pl. (A) 1: fig. 14 | 1950 |
| Scenedesmus armatus var. semigranulatus | Uherkovich | image |
| Scenedesmus armatus var. setosus | Philipose | image |
| Scenedesmus armatus var. smithii | R. Chodat | image |
| Scenedesmus armatus var. spinosus | F.E. Fritsch & M.F. Rich | Trans. Roy. Soc. South Africa | 18: 31, fig. 5 A-C | 1929 |
| Scenedesmus armatus var. spinosus | Fritsch & Rich | image |
| Scenedesmus armatus var. spinuliferum | Komarek & Fott | image |
| Scenedesmus armatus var. splendidus | Uherkovich | image |
| Scenedesmus armatus var. subalternans | G.M. Smith | Trans. Wisconsin Acad. Sci. Arts & Lett. | 18: 461, pl. XXX: figs. 115-120 | 1916 |
| Scenedesmus armatus var. suecicus | Uherkovich | image |
| Scenedesmus armatus var. typicus | R. Chodat | image |
| Scenedesmus arthrodesmiforme | Schröder | image |
| Scenedesmus arthrodesmiformis | Schröder | Ber. Deutsch. Bot. Ges. | 38: 134, fig. 6 | 1920 |
| Scenedesmus arvernensis f. granulatus | Hortobagyi | image |
| Scenedesmus arvernensis f. heterogranulatus | Hortobagyi | image |
| Scenedesmus arvernensis | R. Chodat & F. Chodat | image |
| Scenedesmus asiatica | Ergashev | image |
| Scenedesmus asymmetricus var. multispinosus | Hortobagyi | image |
| Scenedesmus asymmetricus_('asymetricus') | (Schroeder) R. Chodat | image |
| Scenedesmus bacilaris | Gutwinski | image |
| Scenedesmus baculiformis | R. Chodat | image |
| Scenedesmus bajacalifornicus | L.A. Lewis & V.R. Flechtner | J. Phycol. | 40: 1134, figs. 1B, 2C,D | 2004 |
| Scenedesmus balatonicus | Hortobagyi | image |
| Scenedesmus balatonicus var. granulatus | Hortobagyi | image |
| Scenedesmus basilensis | Chodat | image |
| Scenedesmus basiliensis | Vischer | image |
| Scenedesmus bellospinosus | Hortobagyi | image |
| Scenedesmus berczikii | Hortobagyi | image |
| Scenedesmus bernardii | G.M. Smith | Trans. Wisc. Acad. Sci., Arts & Lett. | 18: 436, pl. XXV: fig. 6; pl. XXXII: figs. 196-208 | 1916 |
| Scenedesmus bicauda | Sokoloff | image |
| Scenedesmus bicaudatus | (Hansgirg) R. Chodat | image |
| Scenedesmus bicaudatus var. alternans | Christjuk | Trudy Krymsk. s.-ch. Inst. | 2: 258, fig. 15 | 1947 |
| Scenedesmus bicaudatus var. alternans | Dedusenko | image |
| Scenedesmus bicaudatus var. brevicaudatus | Hortobagyi | image |
| Scenedesmus bicaudatus var. costatus_('costata') | Dedusenko | image |
| Scenedesmus bicaudatus var. dentatus_('dentata') | Dedusenko | image |
| Scenedesmus bicaudatus var. intermedius_('intermedia') | (R. Chodat) Ergashev | image |
| Scenedesmus bicaudatus var. multiseta | Dedusenko | image |
| Scenedesmus bicaudatus var. pyriformis | Dedusenko | image |
| Scenedesmus bicaudatus var. skabitschevskii | Ergashev | image |
| Scenedesmus bicaudatus var. vistulensis | Palik | image |
| Scenedesmus bicaudatus_('bicaudata') | Dedusenko | Trudy Kharkov. Obshch. Isp. Prir. | 50{1}: 72, pl. 1: fig. 14 | 1925 |
| Scenedesmus bicellularis | R. Chodat | Z. Hydrol. | 3: 173, figs. 65-67 | 1926 |
| Scenedesmus bidentatus | Hansgirg | SitzBer. K. Böhm. Ges. Wiss., Math.-Naturw. Cl. | 1892: 119 | 1892 |
| Scenedesmus bijuga | (Turpin) Lagerheim | image |
| Scenedesmus bijuga f. irregularis | G.M. Smith | image |
| Scenedesmus bijuga f. minutissimus | Kufferath | image |
| Scenedesmus bijuga f. parvus | G.M. Smith | Trans. Wisc. Acad. Sci., Art & Lett. | 18: 488, pl. XXX: figs. 106-108 | 1916 |
| Scenedesmus bijuga f. tenuissimus | Jao | image |
| Scenedesmus bijuga var. alternans | (Reinsch) Borge | image |
| Scenedesmus bijuga var. arcuatus | (Lemmermann) May | image |
| Scenedesmus bijuga var. disciformis | (Chodat) C.R. Leite | Biblioth. Phycol. | 67: 212 | 1984 |
| Scenedesmus bijuga var. duplex | Playfair | image |
| Scenedesmus bijuga var. flexuosus | (Lemmermann) Collins | image |
| Scenedesmus bijuga var. granulatus 'Schmidle' | | image |
| Scenedesmus bijuga var. inermis | (Playfair) May | image |
| Scenedesmus bijuga var. irregularis | (Wille) G.M. Smith | image |
| Scenedesmus bijuga var. irregularis | Playfair | image |
| Scenedesmus bijuga var. major | Tiffany & Ahlstrom | image |
| Scenedesmus bijuga var. minor | (Hansgirg) G.M. Smith | image |
| Scenedesmus bijuga var. obtusiusculus | (Chodat) G.M. Smith | image |
| Scenedesmus bijuga var. ralfsii | (Playfair) May | image |
| Scenedesmus bijuga var. vinctus | Beck-Mannagetta | image |
| Scenedesmus bijugatus f. alternans | (Reinsch) Pascher | image |
| Scenedesmus bijugatus f. apiculatus | (W. West & G.S. West) Chodat | image |
| Scenedesmus bijugatus f. apiculatus_('apiculata') | (W. West & G.S. West) Brunnthaler | image |
| Scenedesmus bijugatus f. arcuatus | (Lemmermann) W. West & G.S. West | image |
| Scenedesmus bijugatus f. bispina | Liebetanz | image |
| Scenedesmus bijugatus f. disciformis 'Chodat' | | image |
| Scenedesmus bijugatus f. disciformis | (Chodat) Volk | Jahrb. Hamburg. Wiss. Anst. | 23, Beih. 2: 64 | 1906 |
| Scenedesmus bijugatus f. flexuosus | Arnoldi & Aleksenko | image |
| Scenedesmus bijugatus f. granulatus_('granulata') | (Schmidle) Brunnthaler | image |
| Scenedesmus bijugatus f. irregularis | Wille | image |
| Scenedesmus bijugatus f. major_('majus') | Isabella & R.J. Patel | image |
| Scenedesmus bijugatus f. major_(`majus') | Isabella & R.J. Patel | Phykos | 27: 130, fig. 2 | 1989 |
| Scenedesmus bijugatus f. minor | (Hansgirg) Pascher | image |
| Scenedesmus bijugatus f. minor | Chadha & Pandey | image |
| Scenedesmus bijugatus f. parvus | (G.M. Smith) Philipose | image |
| Scenedesmus bijugatus f. radiatus | (Reinsch) Pascher | image |
| Scenedesmus bijugatus f. seriatus | (R. Chodat) Volk | image |
| Scenedesmus bijugatus f. tetradesmoides | Ermolaeva | image |
| Scenedesmus bijugatus f. verrucosa | Teodoresco | image |
| Scenedesmus bijugatus | Kützing | image |
| Scenedesmus bijugatus var. alternans | (Reinsch) Hansgirg | image |
| Scenedesmus bijugatus var. arcuatus | Lemmermann | Bot. Centralbl. | 76: 150, no fig. | 1898 |
| Scenedesmus bijugatus var. bicellularis | (Chodat) Philipose | image |
| Scenedesmus bijugatus var. clathratus | Biswas | J. Federated Malay States Mus. | 14: 414, pl. X: fig. 20 | 1929 |
| Scenedesmus bijugatus var. costatus | Huber-Pestalozzi | image |
| Scenedesmus bijugatus var. disciformis | Chodat | Alg. Vert. Suisse: | 213, [fig. 87 fide Chodat, Z. Hydrol. 3: 172. 1926] | 1902 |
| Scenedesmus bijugatus var. flexuosus | Lemmermann | image |
| Scenedesmus bijugatus var. graevenitzii | (Bernard) Philipose | image |
| Scenedesmus bijugatus var. granulatus | Schmidle | image |
| Scenedesmus bijugatus var. lunatum | Kammerer | image |
| Scenedesmus bijugatus var. minor | Hansgirg | image |
| Scenedesmus bijugatus var. obtusus | Kammerer | image |
| Scenedesmus bijugatus var. radiatus | (Reinsch) Hansgirg | image |
| Scenedesmus bijugatus var. regularis | D.G. Vodeničarov | image |
| Scenedesmus bijugatus var. seriatus | Chodat | image |
| Scenedesmus bilunulatus | (Turpin) Kützing | image |
| Scenedesmus bisetosus | Massanell i Mira | image |
| Scenedesmus blatnensis | Fott | image |
| Scenedesmus bourrellyi | Iltis | image |
| Scenedesmus bourrellyi | Mosto | image |
| Scenedesmus brasiliensis | Bohlin | Bih. K. Svenska Vet.-Akad. Handl. | 23(Afd. III, 7): 22, pl. I: figs. 36, 37 | 1897 |
| Scenedesmus brasiliensis f. acaudatus | (Hortobagyi) Pankow | image |
| Scenedesmus brasiliensis f. granulatus | Isabella & R.J. Patel | Phykos | 27: 131, fig. 5 | 1989 |
| Scenedesmus brasiliensis f. heterocaudatus | Uherkovich | image |
| Scenedesmus brasiliensis f. obesus | Uherkovich | image |
| Scenedesmus brasiliensis var. cinnamomeus | Roll | image |
| Scenedesmus brasiliensis var. costodispar | Ahlstrom | image |
| Scenedesmus brasiliensis var. major_('majus') | C. Bicudo & Ventrice | image |
| Scenedesmus brasiliensis var. norvegicus | Printz | image |
| Scenedesmus brasiliensis var. pluricostatus | (Bourrelly) Fott & Komarek | image |
| Scenedesmus brasiliensis var. quadrangularis | (Corda) Borge | Ark. Bot. | 28A{6}: 19 | 1936 |
| Scenedesmus brasiliensis var. quadricauda | Volk | image |
| Scenedesmus brasiliensis var. serrato-perforatus | (R.J. Patel & P.K. Isabella George) E. Hegewald & F. Hindak | image |
| Scenedesmus brasiliensis var. serratoperforatus_('serrato-perforatus') | (R.J. Patel & P.K. Isabella George) E. Hegewald & F. Hindák in E. Hegewald, F. Hindák, & E. Schnepf | Beih. Nova Hedwigia | 99: 31 | 1990 |
| Scenedesmus brasiliensis var. spinosissimus | Uherkovich | image |
| Scenedesmus brasiliensis var. spinuliferum | (W. West & G.S. West) Fott & Komarek | image |
| Scenedesmus breviaculeatus | R. Chodat | image |
| Scenedesmus brevispina | (G.M. Smith) R. Chodat | image |
| Scenedesmus brevispina f. granulatus | Hortobagyi | image |
| Scenedesmus brevispina f. obtusispina | Uherkovich | image |
| Scenedesmus brevispina var. bicaudatus | Hortobagyi | image |
| Scenedesmus bucharicus_('bucharica') | Kiselev | image |
| Scenedesmus budapestinensis | Hortobagyi | image |
| Scenedesmus budapestinensis var. spinosus | Hortobagyi | image |
| Scenedesmus buekkensis_('bükkensis') | Hortobagyi | image |
| Scenedesmus calyptratus | Comas González | image |
| Scenedesmus carabus | R. Chodat | image |
| Scenedesmus caribeanus | Komarek | image |
| Scenedesmus carinatus | (Lemmermann) Chodat | image |
| Scenedesmus carinatus f. aculeato-granulatus | Hortobagyi | image |
| Scenedesmus carinatus f. alternans | Bartha | image |
| Scenedesmus carinatus f. brevicaudatus | Uherkovich | image |
| Scenedesmus carinatus f. brevicaudatus | Uherkovich in Uherkovich & Vízkelety | Arch. Hydrobiol. Suppl. | 78 (Algol. Stud. 47): 186, pl. VI: figs. 9, 13 | 1987 |
| Scenedesmus carinatus f. crassicaudatus | Hortobagyi | image |
| Scenedesmus carinatus f. deflexus | Hortobagyi | image |
| Scenedesmus carinatus f. denticulata | Conrad | image |
| Scenedesmus carinatus f. granulatus | Hortobagyi | image |
| Scenedesmus carinatus var. aculeatus | (Hortobagyi) Pankow | image |
| Scenedesmus carinatus var. asymetricus | Bourrelly | image |
| Scenedesmus carinatus var. bicaudatus | Hortobagyi | image |
| Scenedesmus carinatus var. bicaudatus | Järnefelt | image |
| Scenedesmus carinatus var. brevicaudatus | Hortobagyi | image |
| Scenedesmus carinatus var. delicatissimus | (Masjuk) Pankow | image |
| Scenedesmus carinatus var. diagonalis | Shen | image |
| Scenedesmus carinatus var. hanoiensis | Hortobagyi | image |
| Scenedesmus carinatus var. polycostatus | Hortobagyi & Németh | image |
| Scenedesmus cateniformans | R. Chodat | image |
| Scenedesmus caudatoaculeolatus f. bicaudatus | (Hortobagyi) Pankow | image |
| Scenedesmus caudatoaculeolatus var. contactus_('contacta') | (Prescott) Pankow | image |
| Scenedesmus caudatoaculeolatus var. crassibicaudatus_('crassi-bicaudatus') | (Hortobagyi) Pankow | image |
| Scenedesmus caudatoaculeolatus var. maharastrensis | (Kamat) Pankow | image |
| Scenedesmus caudatoaculeolatus var. matebae | (Kufferath) Pankow | image |
| Scenedesmus caudatoaculeolatus var. pelvis | (Hortobagyi) Pankow | image |
| Scenedesmus caudatoaculeolatus var. pseudospinosus | Pankow | image |
| Scenedesmus caudatoaculeolatus var. spinosus | (Dedusenko) Pankow | image |
| Scenedesmus caudatoaculeolatus_('caudato-aculeolatus') | Chodat | Z. Hydrol. | 3: 240, fig. 144 | 1926 |
| Scenedesmus caudatoaculeolatus_('caudato-aculeolatus') | R. Chodat | image |
| Scenedesmus caudatus | Corda | Alman. Carlsbad | 5: 208, pl. IV: fig. 50 | 1835 |
| Scenedesmus caudatus f. abundans | Kirchner | Alg. Schles.: | 98 | 1878 |
| Scenedesmus caudatus f. horridus | Kirchner | image |
| Scenedesmus caudatus f. setosus | Kirchner | image |
| Scenedesmus caudatus f. typicus | Kirchner | image |
| Scenedesmus caudatus var. abundans | (Kirchner) Wolle | image |
| Scenedesmus caudatus var. apiculatus | Kützing | image |
| Scenedesmus caudatus var. brachyurus | Kützing | image |
| Scenedesmus caudatus var. ecaudatus | Kützing | image |
| Scenedesmus caudatus var. horridus | (Kirchner) Wolle | image |
| Scenedesmus caudatus var. major | Kützing | image |
| Scenedesmus caudatus var. minor | Kützing | image |
| Scenedesmus caudatus var. setosus | (Kirchner) Wolle | image |
| Scenedesmus caudatus var. typicus | (Kirchner) Wolle | image |
| Scenedesmus chlorelloides | Chodat | image |
| Scenedesmus cieszynicus | Sosnowska | image |
| Scenedesmus circumfusus f. granulatus | Hortobagyi | image |
| Scenedesmus circumfusus f. pulcher | Hortobagyi | image |
| Scenedesmus circumfusus f. robustus | Uherkovich | image |
| Scenedesmus circumfusus | Hortobagyi | image |
| Scenedesmus circumfusus var. bicaudatus | Hortobagyi | image |
| Scenedesmus circumfusus var. robustus | Hortobagyi | image |
| Scenedesmus circumfusus var. semiquadrispinosus | Hortobagyi | image |
| Scenedesmus clathratus | (Biswas) Philipose | image |
| Scenedesmus clathratus var. granulatus | (Hortobagyi) Philipose | image |
| Scenedesmus coalitus | Hortobágyi | image |
| Scenedesmus coartatus f. tortuosus | Hortobagyi | image |
| Scenedesmus coartatus | Hortobágyi | image |
| Scenedesmus coelastroides | (K. Bohlin) Schmidle | image |
| Scenedesmus cohaerens | Fritsch | image |
| Scenedesmus collaris | Hortobagyi | image |
| Scenedesmus columnatus f. crassispinosus | Hortobagyi | image |
| Scenedesmus columnatus f. danubialis | Hortobagyi | image |
| Scenedesmus columnatus f. gracilis | Hortobagyi | image |
| Scenedesmus columnatus | Hortobagyi | image |
| Scenedesmus columnatus | Hortobagyi | image |
| Scenedesmus columnatus var. bicaudatus | Hortobagyi | image |
| Scenedesmus columnatus var. indicus | Hortobagyi | image |
| Scenedesmus columnatus var. sexangulus | Hortobagyi | image |
| Scenedesmus columnatus var. tropicus | Hortobagyi | image |
| Scenedesmus communis | E. Hegewald | Arch. Hydrobiol. Suppl. | 51: 151, figs. 12, 13 | 1977 |
| Scenedesmus communis | Hegewald | image |
| Scenedesmus convergens | (Ehrenberg) Kützing | image |
| Scenedesmus corallinus | R. Chodat | image |
| Scenedesmus costato-denticulatus | Hortobagyi | image |
| Scenedesmus costato-granulatus | Skuja | image |
| Scenedesmus costato-granulatus var. elegans | (Hortobagyi) E. Hegewald & L. Krienitz | image |
| Scenedesmus costatogranulatus var. elegans | (T. Hortobágyi) E. Hegewald & L. Krienitz | Arch. Hydrobiol. Suppl. | 98 (Algol. Stud. 70): 7 | 1993 |
| Scenedesmus costatogranulatus_('costato-granulatus') | Skuja | Symb. Bot. Upsal. | 9{3}: 137, pl. XVI: figs. 4-6 | 1948 |
| Scenedesmus costatus | Schmidle | image |
| Scenedesmus costatus var. coelastroides | Bohlin | image |
| Scenedesmus costatus var. dewildemanii_('De | Wildemanii') Gutwinski | image |
| Scenedesmus costatus var. poriferus | Gutwinski | image |
| Scenedesmus costatus var. sudeticus | Lemmermann | image |
| Scenedesmus costatus var. typicus | Schröder | image |
| Scenedesmus costogranulatus | Skuja | image |
| Scenedesmus costulatus | Chodat | image |
| Scenedesmus costulatus var. chlorelloides | Roach | image |
| Scenedesmus costulatus var. minor | Chodat | image |
| Scenedesmus courbetensis | Therezien & Coute | image |
| Scenedesmus crassidentatus | Peterfi | image |
| Scenedesmus crassispinosus f. granulatus | Hortobagyi | image |
| Scenedesmus crassispinosus | Hortobagyi | image |
| Scenedesmus crassus | R. Chodat | image |
| Scenedesmus cristatus | Conrad | image |
| Scenedesmus cristatus | Uherkovich | image |
| Scenedesmus cristatus | Uherkovich | image |
| Scenedesmus cumbricus | (G.S. West) R. Chodat | image |
| Scenedesmus cuneatus | A.P. Skabichevskij | Nov. Sist. Nizsh. Rast. [Bot. Inst. Akad. Nauk SSSR] | 76, fig. 1 | 1967 |
| Scenedesmus cuneatus | Skabitschevsky | image |
| Scenedesmus curvatocornis | Proshkina-Lavrenko | Trudy Kharkovsk. Obshch. Isp. Prir. | 50{1}: 36, fig. 8 | 1925 |
| Scenedesmus curvatus | Bohlin | image |
| Scenedesmus dactylococcoides | R. Chodat | Z. Hydrol. | 3: 132, figs. 10, 11, 15e, 22-24 | 1926 |
| Scenedesmus dactylococcopsis | R. Chodat | image |
| Scenedesmus danubialis | Hortobagyi | image |
| Scenedesmus danubialis var. bicaudatus | Hortobagyi | image |
| Scenedesmus danubialis var. robustus | Hortobagyi | image |
| Scenedesmus decorus f. crassispinosus | Hortobagyi | image |
| Scenedesmus decorus f. deflexus | Hortobagyi | image |
| Scenedesmus decorus f. granulatus | Hortobagyi | image |
| Scenedesmus decorus f. heterogranulatus | Hortobagyi | image |
| Scenedesmus decorus f. semigranulatus | Uherkovich | image |
| Scenedesmus decorus | Hortobagyi | image |
| Scenedesmus decorus | Hortobagyi | image |
| Scenedesmus decorus var. bicaudato-granulatus | Uherkovich | image |
| Scenedesmus decorus var. bicaudatus | Hortobagyi | image |
| Scenedesmus decorus var. flagellocaudatus | Hortobagyi | image |
| Scenedesmus decorus var. indicus | Hortobagyi | image |
| Scenedesmus dentatus | Roll | image |
| Scenedesmus denticulatus f. carinatus | P. Mosto apud G. Tell & P. Mosto in S.A. Guarrera, I. Gamundi de Amos, & D. Rabinovich de Halperín (eds.) | Fl. Cript. Tierra del Fuego | 6{2}: 89, pl. XI: fig. 77 | 1983 |
| Scenedesmus denticulatus f. costato-granulatus | (Hortobagyi) Uherkovich | image |
| Scenedesmus denticulatus f. costatus | Bartha | image |
| Scenedesmus denticulatus f. crassispinosus | Hortobagyi & Németh | image |
| Scenedesmus denticulatus f. crassispinosus | Hortobagyi | image |
| Scenedesmus denticulatus f. granulatus | Hortobagyi | image |
| Scenedesmus denticulatus f. granulatus | Hortobagyi | image |
| Scenedesmus denticulatus f. granulatus | Hortobagyi | image |
| Scenedesmus denticulatus f. granulatus | Hortobagyi | image |
| Scenedesmus denticulatus f. granulatus | L. St. Peterfi | image |
| Scenedesmus denticulatus f. linearis | Pascher | image |
| Scenedesmus denticulatus f. maximus | Uherkovich | image |
| Scenedesmus denticulatus f. obtusus | Hortobagyi | image |
| Scenedesmus denticulatus f. propriodenticulatus | Uherkovich | image |
| Scenedesmus denticulatus f. semicostatus | (Hortobagyi) Uherkovich | image |
| Scenedesmus denticulatus f. spinulosus | Beck-Mannagetta | image |
| Scenedesmus denticulatus f. zigzag_('zig-zag') | (Lagerheim) Pascher | image |
| Scenedesmus denticulatus | Lagerheim | Öfvers. K. [Svenska] Vet.-Akad. Förh. | 39{2}: 61, pl. II: figs. 13-17 (fig. 17 = var. zigzag) | 1882 |
| Scenedesmus denticulatus var. australis | Playfair | image |
| Scenedesmus denticulatus var. biseriatus | Gonzalez Guerrero | image |
| Scenedesmus denticulatus var. brevispinus | (Smith) May | image |
| Scenedesmus denticulatus var. caudatus | Uherkovich | image |
| Scenedesmus denticulatus var. costato-granulatus | Hortobagyi | image |
| Scenedesmus denticulatus var. costatus | Hortobagyi | image |
| Scenedesmus denticulatus var. diengianus | Bernard | image |
| Scenedesmus denticulatus var. disciformis | Hortobagyi | image |
| Scenedesmus denticulatus var. elegans | Hortobagyi | image |
| Scenedesmus denticulatus var. fenestratus | (Teiling) Uherkovich | image |
| Scenedesmus denticulatus var. genuinus | Lagerheim | image |
| Scenedesmus denticulatus var. gracilis | Playfair | Proc. Linn. Soc. N.S.W. | 41: 835, pl. LVII: fig. 14 | 1917 |
| Scenedesmus denticulatus var. granulatus | (Hortobagyi) Ergashev | image |
| Scenedesmus denticulatus var. kirchgisicum | Ergashev | image |
| Scenedesmus denticulatus var. kolhapurensis | Kamat | image |
| Scenedesmus denticulatus var. linearis | Hansgirg | Prodr. Alg. Böhmen | 1: 268 | 1888 |
| Scenedesmus denticulatus var. lineatus | W. West | image |
| Scenedesmus denticulatus var. lunatus | W. West & G.S. West | Trans. Linn. Soc. London, Bot. | 5: 83, pl. 5: figs. 11, 12 | 1895 |
| Scenedesmus denticulatus var. lunatus | West & West | image |
| Scenedesmus denticulatus var. minor | Shen | image |
| Scenedesmus denticulatus var. opoliensis | (Richter) Playfair | image |
| Scenedesmus denticulatus var. polydenticulatus | Hortobagyi | image |
| Scenedesmus denticulatus var. quadricauda | Volk | image |
| Scenedesmus denticulatus var. recurvatus | Schumacher | image |
| Scenedesmus denticulatus var. semicostatus | Hortobagyi | image |
| Scenedesmus denticulatus var. sphenisciformis | Hortobagyi | image |
| Scenedesmus denticulatus var. zigzag | Lagerheim | image |
| Scenedesmus deserticola | L.A. Lewis & V.R. Flechtner | J. Phycol. | 40: 1133, figs. 1A,D, 2A,B | 2004 |
| Scenedesmus diagonalis | Fang | image |
| Scenedesmus didymus | Kützing | image |
| Scenedesmus dileticus | Ahlstrom ex Bourrelly | image |
| Scenedesmus dimorphus | (Turpin) Kützing | Linnaea | 8: 608 | 1833 |
| Scenedesmus dimorphus | (Turpin) Kützing | image |
| Scenedesmus dimorphus f. angulatus | Beck-Mannagetta | image |
| Scenedesmus dimorphus f. granulatus | Isabella & R.J. Patel | Phykos | 27: 129, fig. 1 | 1989 |
| Scenedesmus dimorphus f. minor | Chadha & D.C. Pandey | image |
| Scenedesmus dimorphus f. tortus | G.M. Smith | image |
| Scenedesmus dimorphus var. bilunulatus | (Kützing) Kützing | image |
| Scenedesmus dimorphus var. geminatus | Kützing | image |
| Scenedesmus dimorphus var. longispina | Compere | image |
| Scenedesmus dimorphus var. pectinatus | (Meyen) Kützing | image |
| Scenedesmus disciformis | (Chodat) Fott & Komarek | image |
| Scenedesmus disciformis f. granulatus | Komarek | image |
| Scenedesmus disciformis f. obiciturus | (Uherkovich) Komarek | image |
| Scenedesmus dispar | Brébisson | Mém. Soc. Imp. Sci. Nat. Cherbourg | 4: 159, pl. I: fig. 32 | 1856 |
| Scenedesmus dispar | Brebisson | image |
| Scenedesmus dispar f. crassispinosus | Hortobagyi | image |
| Scenedesmus dispar f. denticulatus | Uherkovich in Uherkovich & Vízkelety | Arch. Hydrobiol. Suppl. | 78 (Algol. Stud. 47): 190, pl. VI: fig. 16 | 1987 |
| Scenedesmus dispar f. duplex | Hortobagyi | image |
| Scenedesmus dispar f. elegans | Uherkovich in Uherkovich & Vízkelety | Arch. Hydrobiol. Suppl. | 78 (Algol. Stud. 47): 188, pl. VII: figs. 7, 8; pl. VIII: fig. 3 | 1987 |
| Scenedesmus dispar f. jamunae_('jamunai') | Hortobagyi | image |
| Scenedesmus dispar f. mirabilis | Gleisberg | image |
| Scenedesmus dispar f. paucispinosa | Gleisberg | image |
| Scenedesmus dispar f. semidenticulatus | Uherkovich in Uherkovich & Vízkelety | Arch. Hydrobiol. Suppl. | 78 (Algol. Stud. 47): 188, pl. VII: fig. 9 | 1987 |
| Scenedesmus dispar f. spinosus | Hortobagyi | image |
| Scenedesmus dispar var. costato-granulatus | Hortobagyi | image |
| Scenedesmus dispar var. costatus | Hortobagyi & Németh | image |
| Scenedesmus dispar var. indicus | Hortobagyi | image |
| Scenedesmus dispar var. rabae | Uherkovich in Uherkovich & Vízkelety | Arch. Hydrobiol. Suppl. | 78 (Algol. Stud. 47): 188, pl. VII: figs. 1-6 | 1987 |
| Scenedesmus dispar var. robustus | Uherkovich in Uherkovich & Vízkelety | Arch. Hydrobiol. Suppl. | 78 (Algol. Stud. 47): 190, pl. VI: figs. 18-20 | 1987 |
| Scenedesmus dispar var. samoensis | Wille | image |
| Scenedesmus dispar var. scutatus | Hortobagyi | image |
| Scenedesmus disparioides | Hegewald | image |
| Scenedesmus dissociatus | (P.A. Verses & F.R. Trainor) E. Hegewald & N. Hanagata | Arch. Hydrobiol. Suppl. | 136 (Algol. Stud. 100): 45 | 2000 |
| Scenedesmus distendus_('distentus') | (T. Holtmann) E. Hegewald & N. Hanagata | Arch. Hydrobiol. Suppl. | 136 (Algol. Stud. 100): 45 | 2000 |
| Scenedesmus dividuus | Printz | image |
| Scenedesmus duplex | (Kützing) Ralfs | image |
| Scenedesmus duplex | Kützing | image |
| Scenedesmus echinulatus | Dedusenko-Shchegoleva | Bot. Mater., Spor. Rast., Bot. Inst. Akad. Nauk SSSR | 6: 32, fig. 12 | 1949 |
| Scenedesmus ecornis | (Ralfs) R. Chodat | image |
| Scenedesmus ecornis f. crassapicatus | Huber-Pestalozzi | image |
| Scenedesmus ecornis f. cuneiformis | Bourrelly | image |
| Scenedesmus ecornis f. granulata | Hortobagyi | image |
| Scenedesmus ecornis f. granulata | Hortobagyi | image |
| Scenedesmus ecornis f. granulatus | Hortobagyi | image |
| Scenedesmus ecornis f. granulatus | Thomasson | image |
| Scenedesmus ecornis f. obiciturus | Uherkovich | image |
| Scenedesmus ecornis f. spinosus | Hortobagyi & Németh | image |
| Scenedesmus ecornis f. verrucosus | (Y.V. Roll) Coute & Rousselin | image |
| Scenedesmus ecornis var. concavus | Hortobagyi | image |
| Scenedesmus ecornis var. disciformis | (R. Chodat) R. Chodat | image |
| Scenedesmus ecornis var. flexuosus | (Lemmermann) Fott & Komarek | image |
| Scenedesmus ecornis var. granulatus | (Schmidle) Bourrelly | image |
| Scenedesmus ecornis var. major | R. Chodat | image |
| Scenedesmus ecornis var. minor | R. Chodat | image |
| Scenedesmus ecornis var. mucronulatus | Chodat | Z. Hydrol. | 3: 170. | 1926 |
| Scenedesmus ecornis var. mucronulatus | R. Chodat | image |
| Scenedesmus ecornis var. polymorphus | R. Chodat | image |
| Scenedesmus ecornis var. tetradesmoides | (Ermolaeva) Pankow | image |
| Scenedesmus ecornis var. virgatus | Hortobagyi | image |
| Scenedesmus electus f. granulatus | Hortobagyi | image |
| Scenedesmus electus | Hortobagyi | image |
| Scenedesmus elegans | Beck-Mannagetta | image |
| Scenedesmus elegans f. regularis | L. Péterfi | Nova Hedwigia | 8: 313, figs. 38-40 | 1964 |
| Scenedesmus elegans f. regularis | L. Peterfi | image |
| Scenedesmus elegans | L. Peterfi | image |
| Scenedesmus ellipsoideus f. danubialis | Hortobagyi | image |
| Scenedesmus ellipsoideus f. flagellispinosus | Uherkovich | image |
| Scenedesmus ellipsoideus f. granulatus | Hortobagyi | image |
| Scenedesmus ellipsoideus f. granulatus | Hortobagyi | image |
| Scenedesmus ellipsoideus f. heterocaudatus | Hortobagyi | image |
| Scenedesmus ellipsoideus f. indicus | Pankow | image |
| Scenedesmus ellipsoideus | R. Chodat | image |
| Scenedesmus ellipsoideus var. bicaudatus | Hortobagyi & Németh | image |
| Scenedesmus ellipsoideus var. bicaudatus | Hortobagyi | image |
| Scenedesmus ellipsoideus var. hanoiensis | Hortobagyi | image |
| Scenedesmus ellipsoideus var. spinosus | Hortobagyi | image |
| Scenedesmus ellipsoideus var. symmetricocaudatus | Uherkovich | image |
| Scenedesmus ellipticus | (W. West & G.S. West) Chodat | image |
| Scenedesmus ellipticus | (W. West & G.S. West) Chodat | Monogr. Alg. Cult. Pure: | 69 | 1913 |
| Scenedesmus ellipticus | Corda | Alman. Carlsbad | 5: 208, pl. IV: figs. 48, 49 | 1835 |
| Scenedesmus ellipticus var. clathratus | (Biswas) E. Hegewald in Hegewald et al. | Nova Hedwigia | 47: 515 | 1988 |
| Scenedesmus ellipticus var. clathratus | (Biswas) Hegewald | image |
| Scenedesmus eques | Nitardy | image |
| Scenedesmus eupectinatus | Dedusenko-Shchegoleva | Bot. Mater., Spor. Rast., Bot. Inst. Akad. Nauk SSSR | 6: 33, fig. 13 | 1949 |
| Scenedesmus eurostratus | Christjuk | Trudy Krymsk. s.-ch. Inst. | 2: 258, fig. 16 | 1947 |
| Scenedesmus exaltatus | Hortobágyi | image |
| Scenedesmus exaltatus var. bicaudatus | Hortobagyi | image |
| Scenedesmus extensus | Hortobagyi | image |
| Scenedesmus falcatus f. costulatus | (Hortobagyi) Pankow | image |
| Scenedesmus falcatus f. globosus | (Hortobagyi & Németh) Pankow | image |
| Scenedesmus falcatus f. maximus | Uherkovich | image |
| Scenedesmus falcatus f. tortuosa | Skuja | image |
| Scenedesmus falcatus f. tortuosus_('tortuosa') | Skuja | Acta Hort. Bot. Univ. Latv. | 2: 83, pl. II: fig. 4 | 1927 |
| Scenedesmus falcatus | R. Chodat | image |
| Scenedesmus falcatus | R. Chodat | image |
| Scenedesmus falcatus | R. Chodat | image |
| Scenedesmus falcatus var. danubialis | Palik | image |
| Scenedesmus falcatus var. maior | Kamat | image |
| Scenedesmus falcatus var. major | Huber-Pestalozzi | image |
| Scenedesmus falcatus var. polonicus | Palik | image |
| Scenedesmus falcatus var. tetradesmoides | (G.M. Smith) R. Chodat | image |
| Scenedesmus fenestratus | Teiling | Bot. Not. | 1942: 64, fig. 1 | 1942 |
| Scenedesmus flavescens | Chodat | image |
| Scenedesmus flavescens | R. Chodat | Monogr. Alg. Cult. Pure: | 76, figs. 77, 78; pl. II: fig. 8 | 1913 |
| Scenedesmus flavescens var. breviaculeatus | (Bourrelly) E. Hegewald | image |
| Scenedesmus flavescens var. breviaculeatus | (P. Bourrelly) E. Hegewald | Arch. Hydrobiol. Suppl. | 100 (Algol. Stud. 71): 11 | 1993 |
| Scenedesmus flavescens var. longicaudatus | E. Hegewald | Arch. Hydrobiol. Suppl. | 100 (Algol. Stud. 71): 11, pls. 5-7 | 1993 |
| Scenedesmus flexuosus | (Lemmermann) Ahlstrom | image |
| Scenedesmus formidolosus | Hortobagyi | image |
| Scenedesmus fuegiensis | Masto | image |
| Scenedesmus furcosus | Hortobagyi | image |
| Scenedesmus fuscus | (Shihira & Krauss) Hegewald | image |
| Scenedesmus fuscus var. peruvianus | E. Hegewald | Arch. Hydrobiol. Suppl. | 60: 388, Abb. 28 in Hegewald & Schnepf, Schweiz. Z. Hydrol. 40: 320+ (1979) | 1982 |
| Scenedesmus fusiformis | Meneghini | image |
| Scenedesmus fusiformis | Printz | image |
| Scenedesmus genuinus 'Kirchner' | | image |
| Scenedesmus ginzbergeri | Kammerer | image |
| Scenedesmus gonzalez-guerreroi | Molinari & Guiry | Notulae algarum | 184: 9 | 2021 |
| Scenedesmus gracilis | Matvienko | image |
| Scenedesmus gracilis var. elegans | (Hortobagyi) Ergashev | image |
| Scenedesmus graciosus | Hortobagyi | image |
| Scenedesmus graevenitzii | (Bernard) Margalef | image |
| Scenedesmus grahneisii | (Heynig) Fott | image |
| Scenedesmus grahneisii f. crassicostata | Antal Schmidt | image |
| Scenedesmus granulatus f. bigranulato-disciformis | Hortobagyi | image |
| Scenedesmus granulatus f. bigranulatus | Hortobagyi | image |
| Scenedesmus granulatus f. bourrellyi | Pankow | image |
| Scenedesmus granulatus f. disciformis | Hortobagyi | image |
| Scenedesmus granulatus f. elegans | Hortobagyi | image |
| Scenedesmus granulatus f. elegans | T. Hortobágyi | Nova Hedwigia | 1: 349, fig. 98 | 1960 |
| Scenedesmus granulatus f. magnogranulatus | (Hortobagyi) Uherkovich | image |
| Scenedesmus granulatus f. salina | Crawford | image |
| Scenedesmus granulatus f. spinosus | Hortobagyi | image |
| Scenedesmus granulatus f. subfuscus | Hortobagyi | image |
| Scenedesmus granulatus f. verruco-costatus | Hortobagyi | image |
| Scenedesmus granulatus var. asiatica | Skvortzov | image |
| Scenedesmus granulatus var. biseriatus | Therezien | image |
| Scenedesmus granulatus var. danubialis | Hortobagyi | image |
| Scenedesmus granulatus var. heterogranulatus | (Hortobagyi) Pankow | image |
| Scenedesmus granulatus var. paucigranulatus | Therezien | image |
| Scenedesmus granulatus var. verrucosus | (Roll.) Dedusenko | image |
| Scenedesmus granulatus | W. West & G.S. West | J. Roy. Micr. Soc. | 1897: 500, pl. VII: figs. 1, 2 | 1897 |
| Scenedesmus granulatus | West & West | image |
| Scenedesmus guarreraei | Mosto | image |
| Scenedesmus gujaratensis | Isabella & R.J. Patel | Phykos | 27: 131, figs. 3, 4 | 1989 |
| Scenedesmus gutwinskii f. natrophila | Kiss | image |
| Scenedesmus gutwinskii | R. Chodat | image |
| Scenedesmus gutwinskii var. bacsensis_('bácsensis') | Uherkovich | image |
| Scenedesmus gutwinskii var. bekesensis_('békésensis') | Uherkovich | image |
| Scenedesmus gutwinskii var. heterospina | Bodrogközy | image |
| Scenedesmus gutwinskii var. heterospinosa 'Bodrogközy' | | image |
| Scenedesmus hanleyi | R.F. Fleming | Rev. Palaeobot. Palynol. | 59: 4, fig. 3d, pl. I: fig. 5 | 1989 |
| Scenedesmus heimii | Bourrelly | image |
| Scenedesmus heimii var. longispina | P. Mosto apud G. Tell & P. Mosto in S.A. Guarrera, I. Gamundi de Amos, & D. Rabinovich de Halperín (eds.) | Fl. Cript. Tierra del Fuego | 6{2}: 99, pl. XIII: fig. 96 | 1983 |
| Scenedesmus helveticus f. bicaudata | Korshikov | image |
| Scenedesmus helveticus | R. Chodat | image |
| Scenedesmus helveticus var. asymetricus | Bourrelly | image |
| Scenedesmus helveticus var. major | Huber-Pestalozzi | image |
| Scenedesmus helveticus var. muzzanensis | Huber-Pestalozzi | image |
| Scenedesmus helveticus var. pluricostatus | Bourrelly | image |
| Scenedesmus heteracanthus | Gonzalez Guerrero | image |
| Scenedesmus hindakii | E. Hegewald & N. Hanagata | Arch. Hydrobiol. Suppl. | 136 (Algol. Stud. 100): 46, fig. 5 | 2000 |
| Scenedesmus hirsutus | F. Hindák | Arch. Hydrobiol. Suppl. | 79: 480, fig. 18 | 1988 |
| Scenedesmus hirsutus | F. Hindak | image |
| Scenedesmus hortobagyi | Ergashev | image |
| Scenedesmus hortobagyi | Philipose | image |
| Scenedesmus houlensis | Rayss | image |
| Scenedesmus huangshanensis | S.S. Wang | Acta Phytotax. Sin. | 27: 311, fig. 1:4 | 1989 |
| Scenedesmus hunanensis | Jao | image |
| Scenedesmus hungaricus | Hortobagyi | image |
| Scenedesmus hystrix [subf.] cohaerens | Selk | image |
| Scenedesmus hystrix f. acutiformis | (Schröder) Volk | image |
| Scenedesmus hystrix f. armatus 'Chodat' | | image |
| Scenedesmus hystrix f. armatus-abundans_('armatus abundans') | Volk | image |
| Scenedesmus hystrix f. brasiliensis | (Bohlin) Volk | image |
| Scenedesmus hystrix f. brasiliensis-cohaerens_('brasiliensis cohaerens') | Volk | image |
| Scenedesmus hystrix f. denticulatus | (Lagerheim) Volk | image |
| Scenedesmus hystrix f. denticulatus-bicaudatus_('denticulatus bicaudatus') | Volk | image |
| Scenedesmus hystrix f. depauperata | Wille | image |
| Scenedesmus hystrix f. echinulatus-cohaerens_('echinulatus cohaerens') | Volk | image |
| Scenedesmus hystrix f. laevis | Wille | image |
| Scenedesmus hystrix | Lagerheim | Öfvers. K. [Svenska] Vet. Akad. Förh. | 39{2}: 62, pl. II: fig. 18 | 1882 |
| Scenedesmus hystrix var. acutiformis | (Schröder) Chodat | image |
| Scenedesmus hystrix var. armatus | Chodat | image |
| Scenedesmus hystrix var. armatus | R. Chodat | Alg. Vert. Suisse: | 215, fig. 140 | 1902 |
| Scenedesmus hystrix var. bicaudatus_('bicaudata') | (Guglielmetti) Printz | image |
| Scenedesmus hystrix var. brasiliensis | (Bohlin) Chodat | image |
| Scenedesmus hystrix var. echinulatus | Chodat | image |
| Scenedesmus hystrix var. geminus | B. Bischoff | image |
| Scenedesmus hystrix var. quadricaudatus | Alten | image |
| Scenedesmus hystrix var. regularis | Alten | image |
| Scenedesmus hystrix var. vitiosus | Printz | image |
| Scenedesmus hystrix-cohaerens_('hystrix cohaerens') | Volk | image |
| Scenedesmus incrassatulus | Bohlin | Bih. K. Svenska Vet.-Akad. Handl. | 23(Afd. III, 7): 24, pl. I: figs. 45-51 | 1897 |
| Scenedesmus incrassatulus f. robustus | Uherkovich | image |
| Scenedesmus incrassatulus var. alternans | Dedusenko | image |
| Scenedesmus incrassatulus var. mononae | G.M. Smith | image |
| Scenedesmus incrassatulus var. ovalis | Svirenko | image |
| Scenedesmus incrassatulus var. reniformis | Khristyuk | image |
| Scenedesmus incrassatulus var. robustus | (Uherkovich) Pankow | image |
| Scenedesmus incrassatulus var. spinosus | Mosto | image |
| Scenedesmus incrassatus 'Bohlin' | | image |
| Scenedesmus incrassulatus | Bohlin | image |
| Scenedesmus indianensis | Sieminska | image |
| Scenedesmus indicus | Philipose | image |
| Scenedesmus indicus | Philipose ex Hegewald, Engelberg, & Paschma | image |
| Scenedesmus inermis | (Fott) Hegewald | image |
| Scenedesmus inordatus | Roll | image |
| Scenedesmus insignis | (W. West & G.S. West) Chodat | image |
| Scenedesmus intermedius f. danubialis | Hortobagyi | image |
| Scenedesmus intermedius f. danubialis | Hortobagyi | image |
| Scenedesmus intermedius f. elegans | Hortobagyi | image |
| Scenedesmus intermedius f. granulatus | Hortobagyi | image |
| Scenedesmus intermedius f. granulatus | Hortobagyi | image |
| Scenedesmus intermedius f. granulatus | Hortobagyi | image |
| Scenedesmus intermedius f. granulatus | Hortobagyi | image |
| Scenedesmus intermedius f. halophilus | Uherkovich | image |
| Scenedesmus intermedius f. heterocaudatus | Hortobagyi | image |
| Scenedesmus intermedius f. longispinosus | Hortobagyi | image |
| Scenedesmus intermedius f. longispinosus | Hortobagyi | image |
| Scenedesmus intermedius | R. Chodat | Z. Hydrol. | 3: 231, fig. 135 | 1926 |
| Scenedesmus intermedius var. acaudatus | Hortobagyi | image |
| Scenedesmus intermedius var. acutispinus | (Roll) E. Hegewald & S.S. An in E. Hegewald, S.S. An, & P. Tsarenko | Arch. Hydrobiol. Suppl. | 123 (Algol. Stud. 88): 93 | 1998 |
| Scenedesmus intermedius var. balatonicus | Hortobágyi | Magyar Biol. Kutatóint. Munk. [Arb. Ungar. Biol. ForschInst.] | 15: 111, pl. Vii: fig. 163 | 1943 |
| Scenedesmus intermedius var. balatonicus | Hortobagyi | image |
| Scenedesmus intermedius var. bicaudatus | Hortobagyi | image |
| Scenedesmus intermedius var. crassibicaudato-granulatus | Hortobagyi | image |
| Scenedesmus intermedius var. geminato-alternans | Hortobagyi | image |
| Scenedesmus intermedius var. indicus | Hortobagyi | image |
| Scenedesmus intermedius var. inflatus | (Svirenko) E. Hegewald & S.S. An in E. Hegewald, S.S. An, & P. Tsarenko | Arch. Hydrobiol. Suppl. | 123 (Algol. Stud. 88): 93 | 1998 |
| Scenedesmus intermedius var. papillatus_('papillata') | (Svirenko) Pankow | image |
| Scenedesmus intermedius var. spinosiformis | Hortobagyi | image |
| Scenedesmus irregularis | Hall | image |
| Scenedesmus jamunae f. granulatus | Hortobagyi | image |
| Scenedesmus jamunae_('jamunai') | Hortobagyi | image |
| Scenedesmus javanensis f. nygaardii | (Huber-Pestalozzi) Comas & Komarek | image |
| Scenedesmus javanensis | R. Chodat | Z. Hydrol. | 3: 157, fig. 47 | 1926 |
| Scenedesmus javanensis var. floridensis | Ahlstrom | image |
| Scenedesmus jovis | R. Chodat | image |
| Scenedesmus jovis var. bernardinensis | R. Chodat | image |
| Scenedesmus jovis var. longicaudatus | Hortobagyi & Németh | image |
| Scenedesmus kalhapurensis | Kamat | image |
| Scenedesmus kantonensis | F. Hindák | Preslia | 64: 142, figs. 6, 7 | 1992 |
| Scenedesmus kasachstanicum | Ergashev | image |
| Scenedesmus kerguelensis | Wille | image |
| Scenedesmus kissii f. crassispinosus | Hortobagyi | image |
| Scenedesmus kissii | Hortobagyi | image |
| Scenedesmus kissii | T. Hortobágyi | Acta Bot. Acad. Sci. Hung. | 21: 265, 271, figs. 3-5 | 1976 |
| Scenedesmus koevesii_('kövesii') | Hortobagyi | image |
| Scenedesmus komarekii | E. Hegewald | Arch. Hydrobiol. Suppl. | 60: 400, figs. 154-163 | 1982 |
| Scenedesmus komarekii | Hegewald | image |
| Scenedesmus komarekii var. hirsutus | (F. Hindák) E. Hegewald & F. Hindák in E. Hegewald, F. Hindák, & E. Schnepf | Beih. Nova Hedwigia | 99: 33 | 1990 |
| Scenedesmus komarekii var. hirsutus | (F. Hindak) E. Hegewald | image |
| Scenedesmus komarovii | Khakhina | image |
| Scenedesmus kozmae | Hortobagyi | image |
| Scenedesmus kozmae var. costatus | Hortobagyi | image |
| Scenedesmus kozmae var. danubialis | Hortobagyi | image |
| Scenedesmus lamellatus | Skabitschevsky | image |
| Scenedesmus latocostatus f. major | Mosto | image |
| Scenedesmus latocostatus | Hortobagyi | image |
| Scenedesmus lefevrei var. manguinii | Lefčvre & Bourrelly | image |
| Scenedesmus lefevrei var. muzzanensis | Huber-Pestalozzi | Arch. Hydrobiol. | 20: 420, fig. 4 | 1929 |
| Scenedesmus lefevrei_(`lefevrii') | Deflandre | Bull. Soc. Bot. France | 71: 673, pl. VI: figs. 12, 16 | 1924 |
| Scenedesmus lefevrii | Deflandre | image |
| Scenedesmus lefevrii var. bicaudatus | Uherkovich | image |
| Scenedesmus lefevrii var. muzzanensis | Huber-Pestalozzi | image |
| Scenedesmus lefevrii var. semiserratus | Uherkovich | image |
| Scenedesmus leibleini | Kützing | image |
| Scenedesmus linearis | Komárek | image |
| Scenedesmus linearis var. virgatus | (Hortobagyi) Pankow | image |
| Scenedesmus littoralis | N. Hanagata | J. Jap. Bot. | 76: 132, figs. 6-8, 11, 12 | 2001 |
| Scenedesmus longicauda | (G.M. Smith) R. Chodat | image |
| Scenedesmus longicornis | I.G. Borshchow | Zap. Kievsk. Obshch. Estestvoisp. | 1: 147, pl. 6.2.2 | 1870 |
| Scenedesmus longispina f. asymmetricus 'Hortobagyi 1939' | | image |
| Scenedesmus longispina f. bicaudatus | (Hansgirg) Margalef | image |
| Scenedesmus longispina f. capricornus 'Skuja 1937' | | image |
| Scenedesmus longispina f. capricornus 'Skuja' | | image |
| Scenedesmus longispina f. crassicaudatus | Hortobagyi & Németh | image |
| Scenedesmus longispina f. gibberus | Hortobagyi | image |
| Scenedesmus longispina f. granulatus | Hortobagyi | image |
| Scenedesmus longispina f. granulatus | Hortobagyi | image |
| Scenedesmus longispina f. regularis 'Hortobagyi 1960' | | image |
| Scenedesmus longispina | R. Chodat | Monogr. Alg. Cult. Pure: | 60, figs. 53-57, pl. II: figs. 9, 10 | 1913 |
| Scenedesmus longispina var. asymmetrica | Hortobagyi | image |
| Scenedesmus longispina var. capricornus | Skuja | image |
| Scenedesmus longispina var. regularis | Hortobagyi | image |
| Scenedesmus longistriatus | Hortobagyi | image |
| Scenedesmus longus f. arcuata | Borge | image |
| Scenedesmus longus f. bidigitatus | Isabella & R.J. Patel | Phykos | 27: 132, fig. 6 | 1989 |
| Scenedesmus longus | Meyen | image |
| Scenedesmus longus var. apiculatus | (West & West) G.M. Smith | image |
| Scenedesmus longus var. brevispina | G.M. Smith | image |
| Scenedesmus longus var. carpetana | Gonzalez Guerrero | image |
| Scenedesmus longus var. dispar | (Brebisson) G.M. Smith | image |
| Scenedesmus longus var. ellipticus | (West & West) G.M. Smith | image |
| Scenedesmus longus var. minutus | G.M. Smith | image |
| Scenedesmus longus var. naegelii | (Brebisson) G.M. Smith | image |
| Scenedesmus luna | Corda | Alman. Carlsbad | 8: 195, pl. II: fig. 16 | 1838 |
| Scenedesmus lunatus | (W. West & G.S. West) R. Chodat | image |
| Scenedesmus lunzensis | Bourrelly | image |
| Scenedesmus maculosus f. obtusospinosus | Hortobagyi | image |
| Scenedesmus maculosus | Hortobágyi | image |
| Scenedesmus magnogranulatus | Hortobagyi | image |
| Scenedesmus magnus | Meyen | Verh. K. Leopold.-Carol. Akad. Naturf. | 14: 774, pl. XLII: figs. 26, 27, 29 | 1829 |
| Scenedesmus magnus var. naegelii | (Brébisson) P.M. Tsarenko | Ukrainian Botanical Journal | 47{2}: 29 | 1990 |
| Scenedesmus magyarensis | Philipose | image |
| Scenedesmus mahabaleshwarensis | Kamat | J. Univ. Bombay n.s. | 31{sect. B}: 30, fig. 1 | 1964 |
| Scenedesmus maharastrensis | Kamat | image |
| Scenedesmus margalefii | Kamat | image |
| Scenedesmus matebae | Kufferath | image |
| Scenedesmus maximus | (W. West & G.S. West) Chodat | image |
| Scenedesmus maximus f. granulatus | Hortobagyi | image |
| Scenedesmus maximus var. arcuatus | Virieux | image |
| Scenedesmus maximus var. peruviensis | E. Hegewald in E. Hegewald & E. Schnepf | Arch. Hydrobiol. Suppl. | 51: 316, figs. 18-26 | 1978 |
| Scenedesmus maximus var. peruviensis | Hegewald | image |
| Scenedesmus micrabundans | R. Chodat | image |
| Scenedesmus microspina | R. Chodat | image |
| Scenedesmus microspina var. capensis | Huber-Pestalozzi | image |
| Scenedesmus minor | Kützing | image |
| Scenedesmus minor | Kützing | image |
| Scenedesmus minutus | (G.M. Smith) R. Chodat | image |
| Scenedesmus mirabilis | (Gleisberg) Pankow | image |
| Scenedesmus mirandus | Hortobagyi | image |
| Scenedesmus mirificus | Hortobagyi | image |
| Scenedesmus mirificus | Ley | image |
| Scenedesmus mirus f. bicaudatus | (Hortobagyi) Pankow | image |
| Scenedesmus mirus | Hortobagyi | image |
| Scenedesmus mirus var. exaltatus | (Hortobagyi) Pankow | image |
| Scenedesmus moniliformis | (Turpin) Kützing | image |
| Scenedesmus moniliformis f. duplex | (Kützing) Kützing | image |
| Scenedesmus monomorphus | Chadha & Pandey | image |
| Scenedesmus monospina | Svirenko | image |
| Scenedesmus monospinosus f. disciformis | Pankow | image |
| Scenedesmus monospinosus f. halophilus | (Uherkovich) Pankow | image |
| Scenedesmus monospinosus f. spinosus | (Hortobagyi & Németh) Pankow | image |
| Scenedesmus monospinosus | Pankow | image |
| Scenedesmus morzinensis | Deflandre | image |
| Scenedesmus mucellus | Ahlstrom | image |
| Scenedesmus multicauda | Masyuk | Ukr. Bot. Zhurn. | 19{5}: 76, fig. 4 | 1962 |
| Scenedesmus multiformis | E. Hegewald & F. Hindák in E. Hegewald, F. Hindák, & E. Schnepf | Beih. Nova Hedwigia | 99: 23, pls. 44-47 | 1990 |
| Scenedesmus multiformis | E. Hegewald & F. Hindak | image |
| Scenedesmus multispina | Svirenko | image |
| Scenedesmus multispina var. indicus | (Hortobagyi) Pankow | image |
| Scenedesmus multistriatus_(`multisitriatus') | (H. Trenkwalder) N. Hanagata | J. Phycol. | 34: 1053 | 1998 |
| Scenedesmus muzaffarovii | Ergashev | image |
| Scenedesmus muzzanensis | Huber-Pestalozzi | image |
| Scenedesmus muzzanensis var. montanensis | (Sieminska) Pankow | image |
| Scenedesmus naegelii | Brébisson | Mém. Soc. Imp. Sci. Nat. Cherbourg | 4: 158, no fig. | 1856 |
| Scenedesmus naegelii | Brebisson | image |
| Scenedesmus naegelii f. heterogranulatus | Hortobagyi | image |
| Scenedesmus naegelii var. acaudatus | Hortobagyi & Németh | image |
| Scenedesmus naegelii var. costatus | Teiling | image |
| Scenedesmus naegelii var. longispina | Uherkovich | image |
| Scenedesmus nanus | Chodat | image |
| Scenedesmus nanus f. granulatus | Hortobagyi | image |
| Scenedesmus nanus f. spinosus 'Hortobagyi 1960' | | image |
| Scenedesmus nanus var. bicaudatus | Hortobagyi | image |
| Scenedesmus nanus var. spinosus | Hortobagyi | image |
| Scenedesmus notatus | Corda | Alman. Carlsbad | 8: 196, pl. II: fig. 17 | 1838 |
| Scenedesmus nygaardii_('nygaardi') | Huber-Pestalozzi | Ber. Schweiz. Bot. Ges. | 46: 154, no fig. | 1932 |
| Scenedesmus oahuensis | (Lemmermann) G.M. Smith | image |
| Scenedesmus oahuensis f. danubialis | Hortobagyi | image |
| Scenedesmus oahuensis f. granulatus | Hortobagyi | image |
| Scenedesmus oahuensis f. granulatus | Hortobagyi | image |
| Scenedesmus oahuensis f. longiclathrata | Tell | image |
| Scenedesmus oahuensis f. longiclathratus_(`longiclathrata') | G. Tell | Rev. Algol., ser. 2, | 14: 319, pl. II: fig. 14 | 1979 |
| Scenedesmus oahuensis f. seriatus | Pankow | image |
| Scenedesmus oahuensis var. clathratus_('clathrata') | Manguin | image |
| Scenedesmus oahuensis var. montanensis | Sieminska | image |
| Scenedesmus oahuensis var. simplex | Hortobagyi | image |
| Scenedesmus oahuensis var. symmetricus | Hortobagyi | image |
| Scenedesmus obliquus | (Turpin) Kützing | Linnaea | 8: 609 | 1833 |
| Scenedesmus obliquus | (Turpin) Kützing | image |
| Scenedesmus obliquus f. alternans | Huber | image |
| Scenedesmus obliquus f. intermedius | Bernard | image |
| Scenedesmus obliquus f. magnus | Bernard | Protococcacées et Desmidiées: | 182, figs. 420, 421 | 1908 |
| Scenedesmus obliquus f. parvus | Bernard | image |
| Scenedesmus obliquus f. tetradesmoides | Dedusenko-Shchegoleva | image |
| Scenedesmus obliquus var. acuminatus | (Lagerheim) Playfair | image |
| Scenedesmus obliquus var. acutus 'Meyen' | | image |
| Scenedesmus obliquus var. alternans | Khristyuk | image |
| Scenedesmus obliquus var. costulatus | (R. Chodat) Ergashev | image |
| Scenedesmus obliquus var. dimorphus | (Turpin) Hansgirg | image |
| Scenedesmus obliquus var. globosus | (Hortobagyi) Ergashev | image |
| Scenedesmus obliquus var. hortobagyii | Ergashev | image |
| Scenedesmus obliquus var. inermis | Playfair | image |
| Scenedesmus obliquus var. intermedius | (Bernard) Printz | image |
| Scenedesmus obliquus var. major | R. Chodat | image |
| Scenedesmus obliquus var. non-liquefasciens | Nakano | image |
| Scenedesmus oblongus | Chodat | image |
| Scenedesmus obtusiusculus | Chodat | image |
| Scenedesmus obtusus f. alternans | (Reinsch) Compere | image |
| Scenedesmus obtusus f. disciformis | (Chodat) Compere | image |
| Scenedesmus obtusus f. ecornis | (Ehrenberg ex Ralfs) Compere | image |
| Scenedesmus obtusus f. granulatus | (Schmidle) Compere | image |
| Scenedesmus obtusus f. ralfsii | (Playfair) Cedergren | image |
| Scenedesmus obtusus | Meyen | image |
| Scenedesmus obtusus var. alternans | Kützing | image |
| Scenedesmus obtusus var. apiculatus | (W. West & G.S. West) P.M. Tsarenko in Wasser & Tsarenko | Algologia | 10{4}: 199 | 2000 |
| Scenedesmus obtusus var. binarius | Kützing | image |
| Scenedesmus obtusus var. biternarius | Kützing | image |
| Scenedesmus obtusus var. capitatus 'G.M. | Smith' | image |
| Scenedesmus obtusus var. cornutus | Franzé | Természetrajzi Füz. | 15: 68, 149 | 1892 |
| Scenedesmus obtusus var. cornutus | Franze | image |
| Scenedesmus obtusus var. ecornis | Franze | image |
| Scenedesmus obtusus var. graevenitzii | (Bernard) H. Kuosa | image |
| Scenedesmus obtusus var. graevenitzii | (Bernard) H. Kuosa | Arch. Hydrobiol. Suppl. | 78 (Algol. Stud. 49): 478 | 1988 |
| Scenedesmus obtusus var. minor | (Hansgirg) Volk | image |
| Scenedesmus obtusus var. obliquus | Kützing | image |
| Scenedesmus obtusus var. obliquus-duplex | (Turpin) Kützing | Sp. alg.: | 185 | 1849 |
| Scenedesmus obtusus var. obliquus-duplex_('obliquus duplex') | Kützing | image |
| Scenedesmus obtusus var. octonarius | Kützing | image |
| Scenedesmus obtusus var. quaternarius | Kützing | image |
| Scenedesmus obtusus var. seriatus | Reinhard | image |
| Scenedesmus obtusus var. ternarius | Kützing | image |
| Scenedesmus octalternus | (Turpin) Kützing | image |
| Scenedesmus octocauda | Masyuk | image |
| Scenedesmus octocellularis | I.A. Kisselev | Issl. oz. SSSR Gos. Gidrol. Inst. Vyp. | 8: 83, fig. 17 | 1935 |
| Scenedesmus octodacrys | Brebisson | image |
| Scenedesmus okobojiensis | Ahlstrom | image |
| Scenedesmus oocystiformis | (J.W.G. Lund) N. Hanagata | J. Phycol. | 34: 1053 | 1998 |
| Scenedesmus opoliensis f. bicaudatus | (Hortobagyi) Pankow | image |
| Scenedesmus opoliensis f. brevispina | Roll | image |
| Scenedesmus opoliensis f. crassicaudatus | Hortobagyi | image |
| Scenedesmus opoliensis f. danubialis | Hortobagyi | image |
| Scenedesmus opoliensis f. deflexus | Hortobagyi | image |
| Scenedesmus opoliensis f. denticulatus | Beck-Mannagetta | image |
| Scenedesmus opoliensis f. extensus | Hortobagyi | image |
| Scenedesmus opoliensis f. granulatus | (Hortobagyi) Pankow | image |
| Scenedesmus opoliensis f. granulatus | Hortobagyi | image |
| Scenedesmus opoliensis f. granulatus | Hortobagyi | image |
| Scenedesmus opoliensis f. heterogranulatus | Hortobagyi | image |
| Scenedesmus opoliensis f. pologranulatus 'Hortobagyi' | | image |
| Scenedesmus opoliensis f. robustus | (Hortobagyi) Pankow | image |
| Scenedesmus opoliensis | P. Richter | Z. Angew. Mikrosk. | 1: 3 [L on 7], figs. a-e | 1895 |
| Scenedesmus opoliensis var. abundans | Printz | image |
| Scenedesmus opoliensis var. acaudatus | Hortobagyi & Németh | image |
| Scenedesmus opoliensis var. aculeatus | Hortobágyi | Nova Hedwigia | 1: 377, fig. 233 | 1960 |
| Scenedesmus opoliensis var. aculeatus | Hortobagyi | image |
| Scenedesmus opoliensis var. aculeolata | Printz | image |
| Scenedesmus opoliensis var. alatus | Dedusenko-Shchegoleva | image |
| Scenedesmus opoliensis var. alatus | N. Dedusenko-Shchegoleva | Bot. Mater., Spor. Rast., Bot. Inst. Akad. Nauk SSSR | 6: 32, fig. 10 | 1949 |
| Scenedesmus opoliensis var. asymmetricus | Printz | image |
| Scenedesmus opoliensis var. bicaudato-granulatus | Hortobagyi | image |
| Scenedesmus opoliensis var. bicaudatus | Hortobagyi | image |
| Scenedesmus opoliensis var. brevicaudatus | Hortobagyi | image |
| Scenedesmus opoliensis var. carinatus | Lemmermann | ForschBer. Biol. Stat. Plön | 7: 113, pl. I: fig. 7 | 1899 |
| Scenedesmus opoliensis var. contactus_('contacta') | Prescott | image |
| Scenedesmus opoliensis var. cornuto-granulatus | Hortobagyi | image |
| Scenedesmus opoliensis var. cornutus | Hortobagyi | image |
| Scenedesmus opoliensis var. crassi-bicaudatus | Hortobagyi | image |
| Scenedesmus opoliensis var. crassicaudato-granulatus | Hortobagyi | image |
| Scenedesmus opoliensis var. crassispinosus | (Hortobagyi) Pankow | image |
| Scenedesmus opoliensis var. danubialis | Hortobagyi | image |
| Scenedesmus opoliensis var. diagonalis | Shen | image |
| Scenedesmus opoliensis var. dispar | Shen | image |
| Scenedesmus opoliensis var. exaltatus | (Hortobagyi) Uherkovich | image |
| Scenedesmus opoliensis var. extensus | Hortobagyi | image |
| Scenedesmus opoliensis var. formidolosus | (Hortobagyi) Pankow | image |
| Scenedesmus opoliensis var. horrida | Printz | image |
| Scenedesmus opoliensis var. hortobagyi | Pankow | image |
| Scenedesmus opoliensis var. hyperabundans | Printz | image |
| Scenedesmus opoliensis var. lenticulatus | Hortobagyi | image |
| Scenedesmus opoliensis var. mononensis | R. Chodat | Z. Hydrol. | 3: 210, fig. 112 | 1926 |
| Scenedesmus opoliensis var. semicaudatus | Uherkovich | image |
| Scenedesmus opoliensis var. setosus | Dedusenko-Shchegoleva | image |
| Scenedesmus ornatus | (Lemmermann) G.M. Smith | image |
| Scenedesmus ornatus | Hortobágyi | image |
| Scenedesmus oroalternans | Kiselev | image |
| Scenedesmus ostenfeldii | (Woloszynska) R. Chodat | image |
| Scenedesmus ovalternus | Brebisson | image |
| Scenedesmus ovalternus | R. Chodat | image |
| Scenedesmus ovalternus var. graevenitzii | (Bernard) R. Chodat | image |
| Scenedesmus ovalternus var. indicus | Hortobagyi | image |
| Scenedesmus ovalternus var. irregularis | Kiss | image |
| Scenedesmus ovoalternans | Kiselev | image |
| Scenedesmus paliki | Uherkovich | image |
| Scenedesmus pannonicus f. granulatus | Hortobagyi | image |
| Scenedesmus pannonicus f. heterocaudatus | Hortobagyi & Németh | image |
| Scenedesmus pannonicus f. spinosus | Hortobagyi | image |
| Scenedesmus pannonicus | Hortobagyi | image |
| Scenedesmus pannonicus | T. Hortobágyi | Borbásia Nova | 23: 1, figs. 1-6 | 1944 |
| Scenedesmus pannonicus var. acaudato-granulatus | Hortobagyi | image |
| Scenedesmus pannonicus var. bicaudatus | Hortobagyi & Németh | image |
| Scenedesmus pannonicus var. caudato-granulatus | Hortobagyi | image |
| Scenedesmus pannonicus var. costato-bicaudatus | Hortobagyi | image |
| Scenedesmus pannonicus var. costato-granulatus | Hortobagyi | image |
| Scenedesmus pannonicus var. gracilis | Hortobagyi | image |
| Scenedesmus pannonicus var. heterocaudato-granulatus | Hortobagyi | image |
| Scenedesmus pannonicus var. heterocaudatus | Hortobagyi | image |
| Scenedesmus pannonicus var. longispina | (Uherkovich) Pankow | image |
| Scenedesmus pannonicus var. virgulatus | Hortobagyi | image |
| Scenedesmus papillatus | Jao | image |
| Scenedesmus papillosus | Pankow | image |
| Scenedesmus parisiensis f. minor_('minus') | Philipose | image |
| Scenedesmus parisiensis | R. Chodat | image |
| Scenedesmus parvulus | Meneghini | image |
| Scenedesmus parvus | (G.M. Smith) Bourrelly | image |
| Scenedesmus parvus var. granulatus | Bourrelly | image |
| Scenedesmus pecsensis f. danubialis | Hortobagyi | image |
| Scenedesmus pecsensis f. denticulatus | Uherkovich in Uherkovich & Vízkelety | Arch. Hydrobiol. Suppl. | 78 (Algol. Stud. 47): 192, pl. VII: fig. 16 | 1987 |
| Scenedesmus pecsensis f. heterocaudatus | Hortobagyi | image |
| Scenedesmus pecsensis | Uherkovich | image |
| Scenedesmus pecsensis var. bicaudato-granulatus | Hortobagyi | image |
| Scenedesmus pecsensis var. heterocaudato-granulatus | Hortobagyi | image |
| Scenedesmus pecsensis var. setosus | Uherkovich in Uherkovich & Vízkelety | Arch. Hydrobiol. Suppl. | 78 (Algol. Stud. 47): 192, pl. VI: figs. 1-6 | 1987 |
| Scenedesmus pecsensis var. tvaerminnensis | Uherkovich | image |
| Scenedesmus pectinatus | Meyen | Verh. K. Leopold.-Carol. Akad. Naturf. | 14: 775, pl. XLIII: figs. 33-35 | 1829 |
| Scenedesmus pectinatus var. bernardii | (G.M. Smith) Hegewald & Holtmann | image |
| Scenedesmus pectinatus var. distendus | T. Holtmann | PhD thesis, University of Essen, Fachbereich | 9: 77, pl. 16 | 1994 |
| Scenedesmus pediastroides | Wille | image |
| Scenedesmus pediastrum | De Notaris | image |
| Scenedesmus pelvis | Hortobagyi | image |
| Scenedesmus perforatus f. bicaudatus | Compere | image |
| Scenedesmus perforatus f. bicaudatus | P. Compère | Bull. Jard. Bot. Natl. Belgique | 46: 232, fig. 10 | 1976 |
| Scenedesmus perforatus f. cornutus | Masyuk | image |
| Scenedesmus perforatus f. longiclathratus_('longiclathrata') | (Tell) Pankow | image |
| Scenedesmus perforatus f. longiclathratus_(`longiclathrata') | (G. Tell) H. Pankow | Arch. Protistenk. | 132: 143 | 1986 |
| Scenedesmus perforatus f. mirabilis | Masyuk | image |
| Scenedesmus perforatus f. mirabilis | N.P. Masyuk | Ukr. Bot. Zhurn. | 19{5}: 80, fig.8: 2, 3 | 1962 |
| Scenedesmus perforatus | Lemmermann | Z. Fisch. | 11: 104, fig. 3 | 1903 |
| Scenedesmus perforatus var. argentinensis | Pankow | image |
| Scenedesmus perforatus var. circumcinctus | Masyuk | image |
| Scenedesmus perforatus var. clathratus | (Biswas) Ahlstrom | image |
| Scenedesmus perforatus var. clathratus | (Manguin) Pankow | image |
| Scenedesmus perforatus var. iberaensis | G. Tell | Rev. Algol., ser. 2, | 14: 320, pl. I: figs. 1, 5 | 1979 |
| Scenedesmus perforatus var. iberaensis | Tell | image |
| Scenedesmus perforatus var. inermis | Scherffel | image |
| Scenedesmus perforatus var. inermis | Skuja | image |
| Scenedesmus perforatus var. major | (W. Turner) Philipose | image |
| Scenedesmus perforatus var. oahuensioides | Masyuk | image |
| Scenedesmus perforatus var. ornatus | Lemmermann | image |
| Scenedesmus perforatus var. papillatus | (Jao) Masyuk | image |
| Scenedesmus perforatus var. perornatus | Uherkovich | image |
| Scenedesmus perforatus var. pologranulatus | Teiling | Bot. Not. | 1946: 77, fig. 15 | 1946 |
| Scenedesmus perforatus var. spinosus | G. Tell | Rev. Algol., ser. 2, | 14: 321, pl. I: fig. 6 | 1979 |
| Scenedesmus perforatus var. spinosus | Masyuk | image |
| Scenedesmus perforatus var. spinosus | Tell | image |
| Scenedesmus pettkofii | (Printz) Chodat | image |
| Scenedesmus philiposei_('philiposii') | Chadha & Pandey | image |
| Scenedesmus planctonicus | (Korshikov) Fott | image |
| Scenedesmus platydiscus | (G.M. Smith) R. Chodat | image |
| Scenedesmus platydiscus f. minor | Jao | image |
| Scenedesmus platydiscus var. alternans | (Reinsch) R. Chodat | image |
| Scenedesmus pleiomorphus | F. Hindák | Arch. Hydrobiol. Suppl. | 79: 482, fig. 19 | 1988 |
| Scenedesmus pleiomorphus | Hindak | image |
| Scenedesmus pluricostatus | Bourrelly | image |
| Scenedesmus pluricostatus var. spinatus | Bourrelly, inval. | image |
| Scenedesmus pocsii var. bicaudatus | Hortobagyi | image |
| Scenedesmus pocsii_('pócsii') | Hortobagyi | image |
| Scenedesmus polessicus | P.M. Tsarenko | Ukrainian Botanical Journal | 41{6}: 82, figs. 1, 2 | 1984 |
| Scenedesmus polycostatus | Jao | image |
| Scenedesmus polydenticulatus | Hortobagyi | image |
| Scenedesmus polyglobulus f. granulatus | Hortobagyi | image |
| Scenedesmus polyglobulus | Hortobagyi | image |
| Scenedesmus polymorphus | Wood | image |
| Scenedesmus polyspinosus | Hortobagyi | image |
| Scenedesmus polyspinosus | T. Hortobágyi | Nova Hedwigia | 1: 60, fig. 75 | 1959 |
| Scenedesmus praetervisus f. costato-granulatus | (Hortobagyi) Pankow | image |
| Scenedesmus praetervisus f. duplex | (Hortobagyi) Pankow | image |
| Scenedesmus praetervisus f. manguinii | (Lefevre & Bourrelly) Pankow | image |
| Scenedesmus praetervisus f. semicostatus | (Hortobagyi) Pankow | image |
| Scenedesmus praetervisus | R. Chodat | image |
| Scenedesmus praetervisus var. costato-granulatus | (Hortobagyi) Pankow | image |
| Scenedesmus praetervisus var. scutatus | (Hortobagyi) Pankow | image |
| Scenedesmus praetervisus var. semicostatus | Uherkovich | image |
| Scenedesmus printzii | R. Chodat | image |
| Scenedesmus prismaticus | Brühl & Biswas | image |
| Scenedesmus prismaticus var. spinosus | S.S. Wang | Acta Phytotax. Sin. | 27: 312, figs. 1:7,8 | 1989 |
| Scenedesmus producto-capitatus | Schmula | image |
| Scenedesmus producto-capitatus var. alternans | Svirenko | image |
| Scenedesmus producto-capitatus var. doleoformis | Wawrik | image |
| Scenedesmus producto-capitatus var. elegans | Hortobagyi | image |
| Scenedesmus producto-capitatus var. indicus | (Philipose) Hegewald | image |
| Scenedesmus producto-capitatus var. planus | Roll | image |
| Scenedesmus protuberans f. danubialis 'Uherkov.' | | image |
| Scenedesmus protuberans f. danubialis | (Uherkovich) Uherkovich | image |
| Scenedesmus protuberans f. extensus | Hortobagyi | image |
| Scenedesmus protuberans f. mancus | Uherkovich | image |
| Scenedesmus protuberans f. minor | Ley | image |
| Scenedesmus protuberans f. pologranulatus | Hortobagyi & Németh | image |
| Scenedesmus protuberans | F.E. Fritsch & M.F. Rich | Trans. Roy. Soc. South Africa | 18: 31, fig. 6 | 1929 |
| Scenedesmus protuberans | Fritsch & Rich | image |
| Scenedesmus protuberans var. acaudatus | Hortobagyi | image |
| Scenedesmus protuberans var. alternans | (Svirenko) Pankow | image |
| Scenedesmus protuberans var. aristatus | (R. Chodat) Dedusenko-Shchegoleva | image |
| Scenedesmus protuberans var. bicaudatus | Hortobagyi | image |
| Scenedesmus protuberans var. cornuto-granulatus | Hortobagyi | image |
| Scenedesmus protuberans var. danubianus | (Uherkovich) Ergashev | image |
| Scenedesmus protuberans var. minor 'Lay' | | image |
| Scenedesmus protuberans var. procerus | Uherkovich | image |
| Scenedesmus pseudasymetricus | Deflandre | image |
| Scenedesmus pseudoarmatus | Hortobagyi | image |
| Scenedesmus pseudoarmatus var. bicaudatus | Hortobagyi | image |
| Scenedesmus pseudoarmatus var. bicaudatus | Hortobagyi | image |
| Scenedesmus pseudoarmatus var. danubialis | Hortobagyi | image |
| Scenedesmus pseudobernardii | Comas & Komarek | image |
| Scenedesmus pseudobernardii f. globosus | L. Krienitz | Arch. Hydrobiol. Suppl. | 78 (Algol. Stud. 46): 30 | 1987 |
| Scenedesmus pseudobernardii f. procerus | (T. Hortobágyi) L. Krienitz | Arch. Hydrobiol. Suppl. | 78 (Algol. Stud. 46): 28 | 1987 |
| Scenedesmus pseudobernardii f. procerus | (T. Hortobagyi) L. Krienitz | image |
| Scenedesmus pseudobrevispina | Pankow | image |
| Scenedesmus pseudodenticulatus | E. Hegewald in E. Hegewald & E. Schnepf | Arch. Hydrobiol. Suppl. | 51: 312, figs. 6-17 | 1978 |
| Scenedesmus pseudodenticulatus | Hegewald | image |
| Scenedesmus pseudodispar | Schröder | image |
| Scenedesmus pseudogranulatus | Masyuk | image |
| Scenedesmus pseudogranulatus var. hystricoides | Masyuk | image |
| Scenedesmus pseudohystrix | Masyuk | image |
| Scenedesmus pseudointermedius | Hortobagyi | image |
| Scenedesmus pseudolinearis | Pankow | image |
| Scenedesmus pseudolongispina f. flagellocaudatus | Hortobagyi | image |
| Scenedesmus pseudolongispina | Hortobagyi | image |
| Scenedesmus pseudoopoliensis | Hortobagyi | image |
| Scenedesmus pseudoquadricauda | Hortobagyi | image |
| Scenedesmus pulcherrimus_('pulcherrima') | Christjuk | Trudy Krymsk. s.-ch. Inst. | 2: 258, fig. 14 | 1947 |
| Scenedesmus pulloideus | Hegewald | image |
| Scenedesmus pungens | Hortobagyi | image |
| Scenedesmus pungens | Roll | image |
| Scenedesmus pupukensis | (T. Kalina & M. Punčochár\*vová) E. Kessler, M. Schäfer, C. Hümmer, A. Kloboucek & V. Huss | Bot. Acta | 110: 248 | 1997 |
| Scenedesmus pusillus | Roll | image |
| Scenedesmus pyrus | Corda | Alman. Carlsbad | 5: 208, pl. IV: fig. 53 | 1835 |
| Scenedesmus quadralternus | (Turpin) Kützing | image |
| Scenedesmus quadralternus var. octalternus | (Turpin) Kützing | image |
| Scenedesmus quadrialatus | S.S. Wang | Acta Phytotax. Sin. | 27: 312, figs. 2:2,3 | 1989 |
| Scenedesmus quadricauda | (Turpin) Brebisson | image |
| Scenedesmus quadricauda | Chodat | image |
| Scenedesmus quadricauda f. abundans | (Kirchner) Lagerheim | image |
| Scenedesmus quadricauda f. abundans | Volk | image |
| Scenedesmus quadricauda f. abundans | Volk | image |
| Scenedesmus quadricauda f. aculeato-granulatus | Hortobágyi | image |
| Scenedesmus quadricauda f. asymmeticus_('asymmetica') | (Hortobágyi) Uherkovich | image |
| Scenedesmus quadricauda f. asymmetrica | Liebetanz | image |
| Scenedesmus quadricauda f. asymmetricus | (Hortobágyi) Uherkovich | image |
| Scenedesmus quadricauda f. bicaudatus | Isabella & R.J. Patel | image |
| Scenedesmus quadricauda f. bicaudatus | Isabella & R.J. Patel | Phykos | 27: 133, fig. 9 | 1989 |
| Scenedesmus quadricauda f. bicaudatus | Pankow | image |
| Scenedesmus quadricauda f. bicornutus | Tell | image |
| Scenedesmus quadricauda f. bidigitus | Hortobágyi | image |
| Scenedesmus quadricauda f. capricornus | (Skuja) Uherkovich | image |
| Scenedesmus quadricauda f. cornutus_('cornuta') | Gleisberg | image |
| Scenedesmus quadricauda f. crassiaculeatus | Uherkovich | image |
| Scenedesmus quadricauda f. crassicaudatus | (Hortobágyi & Németh) Pankow | image |
| Scenedesmus quadricauda f. deflexus | Hortobágyi | image |
| Scenedesmus quadricauda f. extensus | Pankow | image |
| Scenedesmus quadricauda f. genuinus | Pascher | image |
| Scenedesmus quadricauda f. gibberus | (Hortobágyi) Uherkovich | image |
| Scenedesmus quadricauda f. giganticus | Uherkovich | image |
| Scenedesmus quadricauda f. gracillimus_('gracillima') | Uherkovich | image |
| Scenedesmus quadricauda f. granulatus | (Hortobágyi) Pankow | image |
| Scenedesmus quadricauda f. granulatus | (Hortobágyi) Uherkovich | image |
| Scenedesmus quadricauda f. granulatus | Hortobágyi | image |
| Scenedesmus quadricauda f. granulatus | Hortobágyi | image |
| Scenedesmus quadricauda f. granulatus | Uherkovich | image |
| Scenedesmus quadricauda f. heterogranulatus | Hortobágyi | image |
| Scenedesmus quadricauda f. heterospinosus | (Hortobágyi) Uherkovich | image |
| Scenedesmus quadricauda f. horridus | (Kirchner) Lagerheim | image |
| Scenedesmus quadricauda f. hyperabundans | Gutwinski | image |
| Scenedesmus quadricauda f. major | Isabella & R.J. Patel | image |
| Scenedesmus quadricauda f. major | Isabella & R.J. Patel | Phykos | 27: 133, fig. 8 | 1989 |
| Scenedesmus quadricauda f. major | W.B. Turner | image |
| Scenedesmus quadricauda f. minor | W.B. Turner | image |
| Scenedesmus quadricauda f. multicaudata | Schröder | image |
| Scenedesmus quadricauda f. multicaudatus_('multicaudata') | Schroeder | image |
| Scenedesmus quadricauda f. obscurus_('obscura') | Gleisberg | image |
| Scenedesmus quadricauda f. regularis | (Hortobágyi) Uherkovich | image |
| Scenedesmus quadricauda f. setosus | (Kirchner) Lagerheim | image |
| Scenedesmus quadricauda f. smithianus | Woronichin | image |
| Scenedesmus quadricauda f. spinosus | (Hortobágyi) Uherkovich | image |
| Scenedesmus quadricauda f. symmetrica | Liebetanz | image |
| Scenedesmus quadricauda f. ternatus | Skabitschevsky | image |
| Scenedesmus quadricauda f. typicus | (Kirchner) Lagerheim | image |
| Scenedesmus quadricauda f. vidyanagarensis | Isabella & R.J. Patel | Phykos | 27: 132, fig. 7 | 1989 |
| Scenedesmus quadricauda f. vistulensis | (Palik) Pankow | image |
| Scenedesmus quadricauda status horridus | Chodat | image |
| Scenedesmus quadricauda subvar. arcuatus_('arcuata') | Virieux | image |
| Scenedesmus quadricauda var. abundans | (Kirchner) Hansgirg | image |
| Scenedesmus quadricauda var. aculeolatus 'Printz' | | image |
| Scenedesmus quadricauda var. acutiformis | (Schröder) Schmidle | image |
| Scenedesmus quadricauda var. acutispinus | Roll | Russk. Arkh. Protistol. | 4: 144, 149, pl. VI: fig. 32 | 1925 |
| Scenedesmus quadricauda var. africanus_('africana') | Fritsch & Rich | image |
| Scenedesmus quadricauda var. aldavei | (Hegewald) Pankow | image |
| Scenedesmus quadricauda var. alternans | Dedusenko | image |
| Scenedesmus quadricauda var. alternans | G.M. Smith | image |
| Scenedesmus quadricauda var. alternans | Svirenko | image |
| Scenedesmus quadricauda var. armatus | (Chodat) Dedusenko | image |
| Scenedesmus quadricauda var. asymmetrica | Schröder | image |
| Scenedesmus quadricauda var. asymmetricus_(`asymmetrica') | Schröder | ForschBer. Biol. Stat. Plön | 5: 45, pl. II [miscited I]: fig. 5 | 1897 |
| Scenedesmus quadricauda var. bicauda 'Hansgirg' | | image |
| Scenedesmus quadricauda var. bicaudato-granulatus | Hortobágyi | image |
| Scenedesmus quadricauda var. bicaudatus | Hansgirg | image |
| Scenedesmus quadricauda var. biornatus_('biornata') | Kiss | image |
| Scenedesmus quadricauda var. boglariensis | (Hortobágyi) Ergashev | image |
| Scenedesmus quadricauda var. brevicaudatus | Proshkina-Lavrenko | image |
| Scenedesmus quadricauda var. cinkotaensis | (Hortobágyi) Ergashev | image |
| Scenedesmus quadricauda var. claviculiferus | Nitardy | image |
| Scenedesmus quadricauda var. compactum | Ergashev | image |
| Scenedesmus quadricauda var. cornuto-granulatus | Hortobágyi | image |
| Scenedesmus quadricauda var. costatus_('costata') | Biswas | image |
| Scenedesmus quadricauda var. costatus_('costata') | Dedusenko | image |
| Scenedesmus quadricauda var. coutei_('couteii') | G. Tell | Rev. Algol., ser. 2, | 14: 321, pl. I: fig. 7 | 1979 |
| Scenedesmus quadricauda var. couteii | Tell | image |
| Scenedesmus quadricauda var. crassicaudatus | Hortobágyi | image |
| Scenedesmus quadricauda var. danubialis | (Hortobágyi) Ergashev | image |
| Scenedesmus quadricauda var. decrescens | Beck-Mannagetta | image |
| Scenedesmus quadricauda var. delicatissimus | Masyuk | image |
| Scenedesmus quadricauda var. dentata | Dedusenko | image |
| Scenedesmus quadricauda var. dispar | (Brebisson) Brunnthaler | image |
| Scenedesmus quadricauda var. dispar | (Brebisson) Brunnthaler | image |
| Scenedesmus quadricauda var. ecornis | (Ehrenberg ex Ralfs) Ralfs | image |
| Scenedesmus quadricauda var. ellipsoideus | (Chodat) M.B. Florin | image |
| Scenedesmus quadricauda var. ellipticum | West & West | image |
| Scenedesmus quadricauda var. ellipticus | W. West & G.S. West | Trans. Linn. Soc. London, Bot. | 5: 83, pl. 5: fig. 6 | 1895 |
| Scenedesmus quadricauda var. eualternans | Proshkina-Lavrenko | image |
| Scenedesmus quadricauda var. exaltatus | (Hortobágyi) Ergashev | image |
| Scenedesmus quadricauda var. genuinus | Hansgirg | image |
| Scenedesmus quadricauda var. granulatus_('granulata') | (Hortobágyi) Ergashev | image |
| Scenedesmus quadricauda var. helveticus | (R. Chodat) Dedusenko-Shchegoleva | image |
| Scenedesmus quadricauda var. heterocaudato-granulatus | Hortobágyi | image |
| Scenedesmus quadricauda var. heterocaudato-verrucosus | Pankow | image |
| Scenedesmus quadricauda var. horridus | (Kirchner) Hansgirg | image |
| Scenedesmus quadricauda var. hortobagyii | Ergashev | image |
| Scenedesmus quadricauda var. hyperabundans 'Gutwinski' | | image |
| Scenedesmus quadricauda var. hystricoides | Masyuk | image |
| Scenedesmus quadricauda var. incurvus | Playfair | image |
| Scenedesmus quadricauda var. inermis | Playfair | image |
| Scenedesmus quadricauda var. inflatus_('inflata') | Svirenko | image |
| Scenedesmus quadricauda var. inflatus_(`inflata') | Svirenko | Russk. Arkh. Protistol. | 3{1/2}: 175, fig. I:1 | 1924 |
| Scenedesmus quadricauda var. insignis | W. West & G.S. West | Trans. Linn. Soc. London, Bot. | 5: 83, pl. 5: figs. 7, 8 | 1895 |
| Scenedesmus quadricauda var. insignis | West & West | image |
| Scenedesmus quadricauda var. intermedius | (Chodat) Philipose | image |
| Scenedesmus quadricauda var. interruptecostatus | Masyuk | image |
| Scenedesmus quadricauda var. kolhapurensis | (Kamat) Philipose | image |
| Scenedesmus quadricauda var. lefevrei_('lefevrii') | (Deflandre) Dedusenko-Shchegoleva | image |
| Scenedesmus quadricauda var. longispina | (Chodat) G.M. Smith | image |
| Scenedesmus quadricauda var. major | Huber-Pestalozzi | image |
| Scenedesmus quadricauda var. maximum | West & West | image |
| Scenedesmus quadricauda var. maximus_(`maximum') | W. West & G.S. West | Trans. Linn. Soc. London, Bot. | 5: 83, pl. 5: figs. 9, 10 | 1895 |
| Scenedesmus quadricauda var. microspina | (Chodat) Philipose | image |
| Scenedesmus quadricauda var. microspina | Martens & Pankow | Int. Rev. Hydrobiol. | 57: 794, fig. 13 | 1972 |
| Scenedesmus quadricauda var. mirificus | Uherkovich | image |
| Scenedesmus quadricauda var. monospina | Dedusenko | image |
| Scenedesmus quadricauda var. multiseta | Svirenko | image |
| Scenedesmus quadricauda var. multispina | Khristyuk | image |
| Scenedesmus quadricauda var. naegelii | (Brebisson) Rabenhorst | image |
| Scenedesmus quadricauda var. oahuensis | Lemmermann | image |
| Scenedesmus quadricauda var. obtusospinosus | Hortobágyi | image |
| Scenedesmus quadricauda var. opoliensis | (Richter) West & West | image |
| Scenedesmus quadricauda var. papillatus_('papillata') | Svirenko | image |
| Scenedesmus quadricauda var. papillosus | Proshkina-Lavrenko | image |
| Scenedesmus quadricauda var. parvus | G.M. Smith | image |
| Scenedesmus quadricauda var. perabundans | Schaarschmidt | image |
| Scenedesmus quadricauda var. pseudosetosus | Ergashev | image |
| Scenedesmus quadricauda var. pyriformis | Dedusenko | image |
| Scenedesmus quadricauda var. quadrispina | (Chodat) G.M. Smith | image |
| Scenedesmus quadricauda var. rectangularis | G.S. West | Mém. Soc. Neucha\*^tel. Sci. Nat. | 5{2}: 1025, pl. XXI: figs. 14-21 | 1914 |
| Scenedesmus quadricauda var. rostratus | Khristyuk | image |
| Scenedesmus quadricauda var. semicaudatus | Hortobágyi | image |
| Scenedesmus quadricauda var. setosus | (Kirchner) Hansgirg | image |
| Scenedesmus quadricauda var. spinosus | Dedusenko | image |
| Scenedesmus quadricauda var. spinosus | Dedusenko-Shchegoleva | Bot. Mater., Spor. Rast., Bot. Inst. Akad. Nauk SSSR | 6: 30, fig. 8 | 1949 |
| Scenedesmus quadricauda var. spiralis | Printz | image |
| Scenedesmus quadricauda var. striatus | Dedusenko-Shchegoleva | image |
| Scenedesmus quadricauda var. typicus | R. Chodat | image |
| Scenedesmus quadricauda var. valdaicus_('valdaica') | Woronichin | image |
| Scenedesmus quadricauda var. variabilis | Hansgirg | SitzBer. K. Böhm. Ges. Wiss., Math.-Naturw. Cl. | 1892: 119 | 1892 |
| Scenedesmus quadricauda var. vesiculosus | Proshkina-Lavrenko | image |
| Scenedesmus quadricauda var. vulgaris | Schaarschmidt | image |
| Scenedesmus quadricauda var. westii | G.M. Smith | image |
| Scenedesmus quadricaudatus | Ehrenberg | image |
| Scenedesmus quadricaudatus var. cornutus | Ehrenberg | image |
| Scenedesmus quadricaudatus var. ecornis | Ehrenberg | image |
| Scenedesmus quadricaudatus var. ecornis | Ehrenberg ex Ralfs | image |
| Scenedesmus quadricaudatus var. longus | (Meyen) Brebisson | image |
| Scenedesmus quadrijugatus | Brebisson | image |
| Scenedesmus quadrijugatus var. minor | (Kützing) Brebisson | image |
| Scenedesmus quadrijugus | (Turpin) Trevisan | image |
| Scenedesmus quadrirenalis | Brebisson & Godey | image |
| Scenedesmus quadrispina | Chodat | image |
| Scenedesmus quadrispina f. crassispinosus | Peterfi | image |
| Scenedesmus quadrispina f. granulatus | Hortobágyi | image |
| Scenedesmus quadrispina var. bicaudatus | Hortobágyi | image |
| Scenedesmus quadrispina var. heterocaudatus-granulatus | Hortobágyi | image |
| Scenedesmus quadrispina var. obtusospinosus | Hortobágyi | image |
| Scenedesmus quadrispina var. spinosus | Hortobágyi | image |
| Scenedesmus raciborskii f. granulatus | Hortobágyi | image |
| Scenedesmus raciborskii f. reniformis_('reniforme') | Pankow | image |
| Scenedesmus raciborskii | Woloszynska | image |
| Scenedesmus radiatus | Reinsch | image |
| Scenedesmus ralfsii | Playfair | image |
| Scenedesmus rectus f. granulatus | Hortobágyi | image |
| Scenedesmus rectus | Hortobágyi & Németh | image |
| Scenedesmus reginae | (T. Holtmann) E. Hegewald & N. Hanagata | Arch. Hydrobiol. Suppl. | 136 (Algol. Stud. 100): 46 | 2000 |
| Scenedesmus regularis | Svirenko | Russ. Arkh. Protist. | 3{1/2}: 178, fig. II: 11 | 1924 |
| Scenedesmus reniformis | Kisselev | image |
| Scenedesmus reniformis | Playfair | image |
| Scenedesmus reniformis_('reniforme') | G.M. Smith | image |
| Scenedesmus retrospinosus | Iltis | image |
| Scenedesmus rostrato-spinosus f. armatus | L. Peterfi | image |
| Scenedesmus rostrato-spinosus f. bicaudatus | Philipose | image |
| Scenedesmus rostrato-spinosus | R. Chodat | image |
| Scenedesmus rostrato-spinosus var. kristianiensis | R. Chodat | image |
| Scenedesmus rostrato-spinosus var. kwangtungensis | Ley | image |
| Scenedesmus rostrato-spinosus var. serrato-pectinatus | R. Chodat | image |
| Scenedesmus rostratospinosus var. serratopectinatus_('serrato-pectinatus') | Chodat | Z. Hydrol. | 3: 212, figs. 115, 116 | 1926 |
| Scenedesmus rotundatus | H.C. Wood | Smithsonian Contrib. Knowl. | 19{3}: 91, pl. XI: fig. 3 | 1873 |
| Scenedesmus rotundus | L.A. Lewis & V.R. Flechtner | J. Phycol. | 40: 1134, fig. 1C | 2004 |
| Scenedesmus rubescens | (P.J.L. Dangeard) E. Kessler, M. Schäfer, C. Hümmer, A. Kloboucek & V. Huss | Bot. Acta | 110: 248 | 1997 |
| Scenedesmus salisburii | Ahlstrom | image |
| Scenedesmus saltator | Hortobágyi | image |
| Scenedesmus scenedesmoides f. semiellipticus | Uherkovich | image |
| Scenedesmus scenedesmoides | R. Chodat | image |
| Scenedesmus schnepfii | E. Hegewald & S.S. An | Biologia, Bratislava | 53: 423, figs. 1-14 | 1998 |
| Scenedesmus schroeteri | Huber-Pestalozzi | image |
| Scenedesmus schroeteri var. nygaardii_('nygaardi') | Huber-Pestalozzi | image |
| Scenedesmus scutatus | Hortobágyi | image |
| Scenedesmus securiformis | Playfair | image |
| Scenedesmus semiamputatus | Hortobágyi | image |
| Scenedesmus semiamputatus var. acaudatus | Hortobágyi | image |
| Scenedesmus semiamputatus var. octocaudatus | Hortobágyi | image |
| Scenedesmus semicarinatus | Järnefelt | image |
| Scenedesmus semicristatus | Uherkovich | image |
| Scenedesmus semilunaris | Seckt | image |
| Scenedesmus semilunaris var. alternans | Seckt | image |
| Scenedesmus semipulcher | Hortobágyi | image |
| Scenedesmus sempervirens | Chodat | image |
| Scenedesmus senilis | | image |
| Scenedesmus senilis | Corda | Alman. Carlsbad | 9: 244 | 1839 |
| Scenedesmus serrato-perforatus | R.J. Patel & P.K. Isabella George | image |
| Scenedesmus serrato-spinosus | R. Chodat | image |
| Scenedesmus serrato-spinosus var. kristianensis | R. Chodat | image |
| Scenedesmus serratopectinatus_('serrato-pectinatus') | P.M. Tsarenko | Ukrainian Botanical Journal | 47{2}: 29 | 1990 |
| Scenedesmus serratoperforatus_('serrato-perforatus') | R.J. Patel & P.K. Isabella George | Curr. Sci. | 50: 778, figs. 1, 2 | 1981 |
| Scenedesmus serratus | (Corda) Bohlin | Bih. Kongl. Svenska Vetensk.-Akad. Handl. | 27 (Afd. III, {4}): 44 | 1901 |
| Scenedesmus serratus f. hortobagyii | Ergashev | image |
| Scenedesmus serratus f. interruptus_('interrupta') | Philipose | image |
| Scenedesmus serratus f. kermajaerviensis_('kermajärviensis') | Järnefelt | image |
| Scenedesmus serratus f. minor | R. Chodat | image |
| Scenedesmus serratus var. echinulatus | Pankow | image |
| Scenedesmus serratus var. halperinii | Tell | image |
| Scenedesmus serratus var. hystrix | R. Chodat | image |
| Scenedesmus serratus var. indicus_('indica') | (Kamat) Therezien & Coute | image |
| Scenedesmus serratus var. muzzanensis | (Huber-Pestalozzi) Pankow | image |
| Scenedesmus serratus var. spinosissimus | (Uherkovich) Pankow | image |
| Scenedesmus setiferus f. bicellularis | R. Chodat | image |
| Scenedesmus setiferus f. ecornis | R. Chodat | image |
| Scenedesmus setiferus f. quadriappendiculata | R. Chodat | image |
| Scenedesmus setiferus f. setosa | R. Chodat | image |
| Scenedesmus setiferus | R. Chodat | image |
| Scenedesmus setiferus var. microspinosus | Hortobágyi | image |
| Scenedesmus shensiensis | Jao | image |
| Scenedesmus shensiensis var. maximus | Hortobágyi | image |
| Scenedesmus sibiricus | (Printz) R. Chodat | image |
| Scenedesmus sihensis | Negoro | image |
| Scenedesmus similagineus f. heterogranulatus | Hortobágyi | image |
| Scenedesmus similagineus f. simplex | Hortobágyi | image |
| Scenedesmus similagineus f. simplex | Hortobágyi | image |
| Scenedesmus similagineus | Hortobágyi | image |
| Scenedesmus skujae | Järnefelt | image |
| Scenedesmus smithii | R. Chodat | image |
| Scenedesmus smithii | Teiling | image |
| Scenedesmus smithii var. indicus | Hortobágyi | image |
| Scenedesmus smithii var. linearis | Philipose | image |
| Scenedesmus smithii var. polyspinosus | Hortobágyi | image |
| Scenedesmus smithii var. spinulosus | S.S. Wang | Acta Phytotax. Sin. | 27: 315, figs. 2:4,5 | 1989 |
| Scenedesmus soli | Hortobágyi | image |
| Scenedesmus soli var. bicaudatus | Hortobágyi | image |
| Scenedesmus soli var. exornatus | Uhercovich | Dunántúli Dolgozatok Dolg. Term. Tud. Sor. | 1: 9-33. | 1978 |
| Scenedesmus sooi f. danubialis | Hortobágyi | image |
| Scenedesmus sooi f. elegans | Hortobágyi | image |
| Scenedesmus sooi f. flagellispinosus | Uherkovich | image |
| Scenedesmus sooi f. granulatus | Hortobágyi | image |
| Scenedesmus sooi f. robustus | Hortobágyi | image |
| Scenedesmus sooi var. bicaudatus | Hortobágyi | image |
| Scenedesmus sooi var. bouakensis | Uherkovich | image |
| Scenedesmus sooi var. collaris | (Hortobágyi) Hortobágyi | image |
| Scenedesmus sooi var. exornatus | Uherkovich | image |
| Scenedesmus sooi var. insignis | Hortobágyi | image |
| Scenedesmus sooi var. symmetro-caudatus | Hortobágyi | image |
| Scenedesmus sooi var. symmetro-granulatus | Hortobágyi | image |
| Scenedesmus sooi var. tiszae | Uherkovich | image |
| Scenedesmus sooi var. verrucosus | Hortobágyi | image |
| Scenedesmus sooi_('soói') | Hortobágyi | image |
| Scenedesmus speciosus f. bicaudatus | Uherkovich | Tiscia | 3: 5, pl. II: fig. 3 | 1967 |
| Scenedesmus speciosus | Hortobágyi | image |
| Scenedesmus spicatus | W. West & G.S. West | image |
| Scenedesmus spinosiformis | (Hortobágyi) Pankow | image |
| Scenedesmus spinosiformis var. microspinosus | (Hortobágyi) Pankow | image |
| Scenedesmus spinoso-aculeolatus | R. Chodat | image |
| Scenedesmus spinosus | Chodat | image |
| Scenedesmus spinosus f. bicaudatus | (Hortobágyi) Uherkovich | image |
| Scenedesmus spinosus f. crassi-heterocaudatus | Hortobágyi | image |
| Scenedesmus spinosus f. crassicaudatus | Hortobágyi | image |
| Scenedesmus spinosus f. crassicaudatus | T. Hortobágyi | Bot. Közlem. | 54: 14, 18, figs. 15-38 | 1967 |
| Scenedesmus spinosus f. exaltatus | Hortobágyi | image |
| Scenedesmus spinosus f. hanoiensis | Hortobágyi | image |
| Scenedesmus spinosus f. hanoiensis | Hortobágyi | image |
| Scenedesmus spinosus f. heterocaudatus | Hortobágyi | image |
| Scenedesmus spinosus f. longispinus | Hortobágyi | image |
| Scenedesmus spinosus f. ornatus_('ornata') | Yacubson | image |
| Scenedesmus spinosus f. solutus_('soluta') | R. Chodat | image |
| Scenedesmus spinosus | R. Chodat | Monogr. Alg. Cult. Pure: | 74, figs. 70-74; pl. II: fig. 7 | 1913 |
| Scenedesmus spinosus var. bicaudatus | Hortobágyi | Nova Hedwigia | 1: 363, figs. 175-189 | 1960 |
| Scenedesmus spinosus var. bicaudatus | Hortobágyi | image |
| Scenedesmus spinosus var. crassispinosus | Hortobágyi | image |
| Scenedesmus spinosus var. danubialis | Hortobágyi | image |
| Scenedesmus spinosus var. flavescens | (R. Chodat) R. Chodat | image |
| Scenedesmus spinosus var. heterocaudatus | (Hortobágyi) Pankow | image |
| Scenedesmus spinosus var. microspinosus | T. Hortobágyi | Nova Hedwigia | 1: 362, fig. 171 | 1960 |
| Scenedesmus spinosus var. microspinosus | T. Hortobágyi | image |
| Scenedesmus spinosus var. polyspinosus | Hortobágyi | image |
| Scenedesmus spinosus var. symmetricus | Hortobágyi | image |
| Scenedesmus spinosus var. tenuispina | (Chodat) Uherkovich | image |
| Scenedesmus spinosus var. tenuispina | (R. Chodat) Uherkovich | image |
| Scenedesmus spinulatus | Biswas | image |
| Scenedesmus spinulatus | K. Biswas | Hedwigia | 74: 20, pl. III: fig. 4 | 1934 |
| Scenedesmus spinulatus var. polyspinosus | (Hortobágyi) Pankow | image |
| Scenedesmus splendidus | Hortobágyi | image |
| Scenedesmus stomatomorphus | (Turpin) Kützing | image |
| Scenedesmus striatus | Dedusenko-Shchegoleva | image |
| Scenedesmus striatus var. apiculatus | Dedusenko-Shchegoleva | image |
| Scenedesmus subspicatus | R. Chodat | Z. Hydrol. | 3: 222, fig. 128 | 1926 |
| Scenedesmus subspicatus var. brevicauda | (G.M. Smith) R. Chodat | image |
| Scenedesmus subspicatus var. crassicaudatus | (T. Hortobágyi) F. Hindák | Preslia | 64: 140 | 1992 |
| Scenedesmus subspicatus var. kerguelensis | Therezien & Coute | image |
| Scenedesmus subspicatus var. longicauda | (Smith) R. Chodat | image |
| Scenedesmus subspicatus var. spicatiformis | R. Chodat | image |
| Scenedesmus subspicatus var. typicus | R. Chodat | image |
| Scenedesmus szemesii | Hortobágyi | image |
| Scenedesmus tenuispina | R. Chodat | image |
| Scenedesmus tenuispina var. breviaculeatus | Bourrelly | image |
| Scenedesmus tenuispina var. breviaculeatus | P. Bourrelly | Biblioth. Phycol. | 76: 57, pl. XXIII: figs. 7-9 | 1987 |
| Scenedesmus terrestris | (H. Reisigl) N. Hanagata | J. Phycol. | 34: 1053 | 1998 |
| Scenedesmus tetradacrys | Brebisson | image |
| Scenedesmus tetradacrys var. duplex | Brebisson | image |
| Scenedesmus tetradacrys var. duplex | Brebisson | image |
| Scenedesmus tetradesmiformis | (Woloszynska) R. Chodat | image |
| Scenedesmus tetradesmiformis f. alternarius | R. Chodat | image |
| Scenedesmus tetradesmiformis f. coroniformis | R. Chodat | image |
| Scenedesmus tetradesmiformis f. dactylococcus | R. Chodat | image |
| Scenedesmus tetradesmiformis f. dispar | R. Chodat | image |
| Scenedesmus tetradesmiformis f. parenchymaticus | R. Chodat | image |
| Scenedesmus tetradesmiformis f. scalaris | R. Chodat | image |
| Scenedesmus tetradesmiformis f. seriatus | R. Chodat | image |
| Scenedesmus tetradesmiformis f. singularis | R. Chodat | image |
| Scenedesmus tetradesmiformis f. tetradesmoides | (G.M. Smith) R. Chodat | image |
| Scenedesmus tetradesmiformis var. ponti-euxini | Uherkovich | image |
| Scenedesmus tetrapenion | Brebisson | image |
| Scenedesmus tetrapenion | Brebisson | image |
| Scenedesmus thomassonii f. crassi-bicaudatus 'Hortobágyi' | | image |
| Scenedesmus thomassonii | Hortobágyi | image |
| Scenedesmus thomassonii var. crassi-bicaudatus | Hortobágyi | image |
| Scenedesmus tibiscensis | Uherkovich | image |
| Scenedesmus tothii | Hortobágyi | image |
| Scenedesmus trainorii f. quadricauda | Shubert | image |
| Scenedesmus trainorii | Shubert | image |
| Scenedesmus tricostatus | (R. Chodat) P. Mosto apud G. Tell & P. Mosto in S.A. Guarrera, I. Gamundi de Amos, & D. Rabinovich de Halperín (eds.) | Fl. Cript. Tierra del Fuego | 6{2}: 92 | 1983 |
| Scenedesmus trijugatus | Kützing | image |
| Scenedesmus triseriatus | Meneghini | image |
| Scenedesmus tropicus var. perornatus | (Uherkovich) Pankow | image |
| Scenedesmus tropicus | W.B. Crow | J. Bot. [London] | 61: 166, fig. [2] | 1923 |
| Scenedesmus tschudyi | R.F. Fleming | Rev. Palaeobot. Palynol. | 59: 3, figs. 3a, 3c, pl. I: figs. 1-4 | 1989 |
| Scenedesmus tuberculatus | W.Q. Chen | J. Sichuan Univ., Nat. Sci. Ed. | 4: 102, pl. II, fig. 7 | 1984 |
| Scenedesmus uherkovichii | Hortobágyi | image |
| Scenedesmus unicellularis | R. Chodat | image |
| Scenedesmus unicus | Hortobágyi | image |
| Scenedesmus ushuaiensis | Mosto | image |
| Scenedesmus uzbekistanicum | Ergashev | image |
| Scenedesmus vacuolatus | (I. Shihira & R.W. Krauss) E. Kessler, M. Schäfer, C. Hümmer, A. Kloboucek & V. Huss | Bot. Acta | 110: 248 | 1997 |
| Scenedesmus variabilis | De Wildeman | image |
| Scenedesmus variabilis var. cornutus | (Franzé) De Wildeman | Notarisia | 8: 100 | 1893 |
| Scenedesmus variabilis var. cornutus | (Franze) De Wildeman | image |
| Scenedesmus variabilis var. ecornis | De Wildeman | image |
| Scenedesmus velitaris | Komárek | image |
| Scenedesmus verrucosus f. bigranulato-disciformis | (Hortobágyi) Pankow | image |
| Scenedesmus verrucosus | Gonzalez Guerrero | image |
| Scenedesmus verrucosus | P. González-Guerrero | Anales del Jardín Botánico de Madrid | 1: 153 | 1940 |
| Scenedesmus verrucosus | Roll | image |
| Scenedesmus verrucosus | Y.V. Roll | Russ. Arkh. Protist. | 4: 145 (R), pl. VI: fig. 36 | 1925 |
| Scenedesmus vesiculosus | (Proshkina) L. Peterfi | image |
| Scenedesmus vesiculosus f. pseudovesiculosus | L. Peterfi | image |
| Scenedesmus vitiosus | (Printz) R. Chodat | image |
| Scenedesmus vitiosus var. ellipticus | Bourrelly | image |
| Scenedesmus westii | (G.M. Smith) R. Chodat | image |
| Scenedesmus westii var. heterospinosus | Hortobágyi | image |
| Scenedesmus wisconsinensis | (G.M. Smith) Chodat | image |
| Scenedesmus wisconsinensis var. gyoparosiensis_('gyopárosiensis') | Kiss | image |
| Scenedesmus wisconsinensis var. muticus | Chodat | image |
| Scenedesmus wisconsinensis var. reginae | T. Holtmann | PhD thesis, University of Essen, Fachbereich | 9: 81, pl. 20 | 1994 |
| Scenedesmus woloszynskae | R. Chodat | image |
| Scenedesmus wuhanensis | Yinxin Wei | Journal of Wuhan Botanical Research | 3: 248, figs. 5, 6 | 1985 |
| Scenedesmus wuhuensis | S.S. Wang | Acta Phytotax. Sin. | 27: 315, figs. 2:7,8 | 1989 |
| Scenedesmus yiduensis | Dayue Zhu & Liejue Bi | Journal of Wuhan Botanical Research | 8: 53, fig. 1 | 1990 |
| Ursinella scenedesmus | (Delponte) Kuntze | image |