Achroonema Skuja, 1948 (original description)
Achroonema spiroideum Skuja, 1948 (original description)
Amphirhiza Skuja, 1948 (original description)
Amphirhiza epizootica Skuja, 1948 (original description)
Anisonema dubium Skuja, 1948 accepted as Neometanema dubium (Skuja) Won J.Lee & A.G.B.Simpson, 2014 (original description)
Anisonema strenuum Skuja, 1948 accepted as Neometanema strenuum (Skuja) W.J.Lee & A.G.B.Simpson, 2014 (original description)
Ankistrodesmus acicularis var. heteropolis Skuja, 1948 (original description)
Ankistrodesmus nannoselene Skuja, 1948 accepted as Drepanochloris nannoselene (Skuja) Marvan, Komárek & Comas, 1984 (original description)
Aphanothece clathrata var. rosea Skuja, 1948 (original description)
Aphanothece microscopica f. endophytica Skuja, 1948 (original description)
Astasia hypolimnica Skuja, 1948 (original description)
Astasia kathemerios Skuja, 1948 (original description)
Bicosoeca multiannulata Skuja, 1948 (original description)
Bodo designis Skuja, 1948 accepted as Neobodo designis (Skuja) Vickerman, 2004 (original description)
Cecidochloris Skuja, 1948 (original description)
Cecidochloris stichogloeae Skuja, 1948 accepted as Cecidochloris adnata (Korshikov) H.Ettl, 1958 (original description)
Cercobodo acutus Skuja, 1948 (original description)
Cercobodo angustus Skuja, 1948 (original description)
Cercobodo pronucleatus Skuja, 1948 (original description)
Cercobodo pseudodactylopterus Skuja, 1948 (original description)
Cercobodo varians Skuja, 1948 (original description)
Chaetopedia Skuja, 1948 accepted as Crucigloea C.J.Soeder, 1978 (original description)
Chaetopedia crassiseta Skuja, 1948 accepted as Crucigloea crassiseta (Skuja) Soeder, 1978 (original description)
Chamaesiphon cylindrosporus Skuja, 1948 (original description)
Characiochloris polychloris Skuja, 1948 accepted as Chlamydomonadopsis polychloris (Skuja) Fott, 1972 (original description)
Characiochloris sideropus Skuja, 1948 accepted as Chlamydomonadopsis sideropus (Skuja) Fott, 1972 (original description)
Characiopsis curvata (G.M.Smith) Skuja, 1948 (new combination reference)
Characiopsis microcysticola Skuja, 1948 (original description)
Characiopsis umbilicata Skuja, 1948 (original description)
Chlamydomonas autumnalis Skuja, 1948 accepted as Gloeomonas autumnalis (Skuja) H.Ettl & O.Ettl, 1959 (original description)
Chlamydomonas botrys Rodhe & Skuja, 1948 accepted as Chlamydomonas botryopara Rodhe & Skuja, 1949 (original description)
Chlamydomonas foveolarum Skuja, 1948 (original description)
Chlamydomonas gloeopara Rodhe & Skuja, 1948 (original description)
Chlamydomonas gloeophila Skuja, 1948 (original description)
Chlamydomonas hypolimnica Skuja, 1948 accepted as Chloromonas hypolimnica (Skuja) Gerloff & Ettl, 1970 (original description)
Chlamydomonas lateralis Skuja, 1948 (original description)
Chlamydomonas pelophila Skuja, 1948 accepted as Chloromonas pelophila (Skuja) Gerloff & Ettl, 1970 (original description)
Chlamydomonas tremulans Skuja, 1948 (original description)
Chlorangium polychlorum Skuja, 1948 accepted as Chlorangiella polychlora (Skuja) P.C.Silva, 1959 (original description)
Chlorella homosphaera Skuja, 1948 accepted as Mychonastes homosphaera (Skuja) Kalina & Puncochárová, 1987 (original description)
Chromatium densegranulatum Skuja, 1948 (original description)
Chromatium obovatum Skuja, 1948 (original description)
Chromatium okenii (E.) Perty (basis of record)
Chromatium weissei Perty (basis of record)
Chroococcus siderochlamys Skuja, 1948 accepted as Gloeocapsa siderochlamys (Skuja) Starmach, 1966 (original description)
Chrysococcus cystophorus Skuja, 1956 (original description)
Chrysoxys Skuja, 1948 (original description)
Chrysoxys maior Skuja, 1948 (original description)
Closterium parvulum var. tortum (B.M.Griffiths) Skuja, 1948 accepted as Closterium tortum B.M.Griffiths, 1925 (new combination reference)
Coccomyxa coccoides Rode & Skuja, 1948 accepted as Choricystis coccoides (Rodhe & Skuja) Fott, 1967 (original description)
Coccomyxa minor Skuja, 1948 accepted as Choricystis parasitica (K.Brandt) Pröschold & Darienko, 2011 (original description)
Codonosigopsis kosmos Skuja, 1948 (original description)
Coelastrum octaëdricum Skuja, 1948 accepted as Coelastrum microporum var. octaëdricum (Skuja) Sodomková, 1972 (original description)
Cryptaulax Skuja, 1948 (original description)
Cryptaulax formica Skuja, 1948 (original description)
Cryptaulax longiciliatus Skuja, 1948 (original description)
Cryptaulax vulgaris Skuja, 1948 (original description)
Cryptomonas gracilis Skuja, 1948 (original description)
Cryptomonas lucens Skuja, 1948 accepted as Cryptomonas obovoidea Pascher, 1913 (original description)
Cryptomonas marssonii Skuja, 1948 (original description)
Cryptomonas parapyrenoidifera Skuja, 1948 (original description)
Cryptomonas phaseolus Skuja, 1948 (original description)
Cryptomonas platyuris Skuja, 1948 (original description)
Cryptomonas reflexa Skuja, 1939 (ecology source)
Cryptomonas rostrata Skuja, 1948 (original description)
Cryptomonas tetrapyrenoidosa Skuja, 1948 (original description)
Dendromonas cryptostylis Skuja, 1948 (original description)
Distigma striatogranulatum Skuja, 1948 (original description)
Distigma striato-granulatum Skuja, 1948 (original description)
Erkenia Skuja, 1948 accepted as Chrysochromulina Lackey, 1939 (original description)
Erkenia subaequiciliata Skuja, 1948 accepted as Chrysochromulina parva Lackey, 1939 (original description)
Euglena clara Skuja, 1948 (original description)
Euglena clavata Skuja, 1948 accepted as Euglenaria clavata (Skuja) Karnkowska & E.W.Linton, 2010 (original description)
Euglena dicentra Skuja, 1948 accepted as Euglena cantabrica Pringsheim, 1956 (original description)
Euglena gasterosteus Skuja, 1948 (original description)
Euglena hemichromata Skuja, 1948 (original description)
Euglena platydesma Skuja, 1948 accepted as Lepocinclis platydesma (Skuja) Marin & Melkonian, 2003 (original description)
Euglena spathirhyncha Skuja, 1948 accepted as Discoplastis spathirhyncha (Skuja) Triemer, 2006 (original description)
Euglena subehrenbergii Skuja, 1948 (original description)
Eusphaerella Skuja, 1948 (original description)
Eusphaerella turfosa Skuja, 1948 accepted as Uroglenopsis turfosa (Skuja) R.H.Thompson & D.E.Wujek, 2002 (original description)
Eutreptia thiophila Skuja, 1948 (original description)
Glaucophyta (original description)
Gloeotila pulchra Skuja, 1948 (original description)
Gomphosphaeria fusca Skuja, 1948 accepted as Woronichinia fusca (Skuja) Komárek & Hindák, 1988 (original description)
Gymnodinium eurytopum Skuja, 1948 (original description)
Gymnodinium latum Skuja, 1948 (original description)
Gyromitus cordiformis Skuja, 1948 (original description)
Heterochromonas bodoides Skuja, 1948 (original description)
Heterochromonas globosa Skuja, 1948 (original description)
Heterochromonas opaca Skuja, 1948 (original description)
Heterochromonas polysticta Skuja, 1948 (original description)
Heteronema discomorphum Skuja, 1948 (original description)
Heteronema hexagona (Playfair) Skuja, 1948 (new combination reference)
Heteronema hexagonum (Playfair) Skuja, 1948 (new combination reference)
Heteronema saccula Skuja, 1948 (original description)
Heteronema sacculus Skuja, 1948 (original description)
Holopedium granulatum Skuja, 1948 accepted as Microcrocis granulata (Skuja) Skuja, 1966 (original description)
Isthmochloron Skuja, 1948 (original description)
Isthmochloron lobulatum (Nägeli) Skuja, 1948 (new combination reference)