Dodatak:Popis kromista, O
- Oblongichytriidae
- Oblongichytrium
Koljeno Ochrophyta Cavalier-Smith, 1995
[uredi | uredi kôd]Chromista → Harosa → Heterokonta
- Octodendron
- Octopyle
Olpidiomorpha Scherff., 1926
[uredi | uredi kôd]- Olpidiomorpha pseudosporae Scherff., 1926
Chromista → Oomycota → Rozellopsidales
Olpidiopsidaceae Sparrow ex Cejp, 1959
[uredi | uredi kôd]- Bicilium H.E. Petersen, 1910
- Olpidiopsis Cornu, 1872
- Peronium Cohn, 1854
- Pleocystidium C. Fisch, 1884
Chromista → Oomycota → Peronosporea → Olpidiopsidales
Olpidiopsidales M.W. Dick, 2001
[uredi | uredi kôd]- Gracea M. W. Dick, 1997
- Olpidiopsidaceae Sparrow ex Cejp, 1959
Chromista → Oomycota → Peronosporea
Olpidiopsis Cornu, 1872
[uredi | uredi kôd]- Olpidiopsis feldmanni (Aleem, 1952)
- Olpidiopsis magnusii (J. & G. Feldmann, 1955)
Chromista → Oomycota → Peronosporea → Olpidiopsidales → Olpidiopsidaceae
- Onslowia bahamensis E.C.Henry, 1987
- Onslowia endophytica Searles, 1980
Chromista → Ochrophyta → Phaeophyceae → Onslowiales → Onslowiaceae
Porodica Onslowiaceae S.G.A. Draisma & W.F. Prud'homme van Reine
[uredi | uredi kôd]- Onslowia Searles, 1980
- Verosphacela E.C.Henry, 1987
Chromista → Ochrophyta → Phaeophyceae → Onslowiales
Red Onslowiales
[uredi | uredi kôd]- Onslowiaceae S.G.A. Draisma & W.F. Prud'homme van Reine
Chromista → Ochrophyta → Phaeophyceae
- Oomycota
Podrod Ophidiella
[uredi | uredi kôd]Chromista → Myzozoa → Aconoidasida → Haemosporida → Plasmodiidae → Plasmodium
- Orcadia riedeli (Rögl & Bolli, 1973)
Chromista → Foraminifera → Globothalamea → Rotaliida → Globigerinoidea → Hastigerinidae
Ornatanomalina Haque, 1956 †
[uredi | uredi kôd]Chromista → Foraminifera → Globothalamea → Rotaliida → Rotalioidea → Rotaliidae → Cuvillierininae
Osangularia Brotzen, 1940
[uredi | uredi kôd]- Osangularia bengalensis (Schwager, 1866)
- Osangularia brunswickensis Todd & Kniker, 1952 †
- Osangularia cordieriana †
- Osangularia culter (Parker & Jones, 1865)
- Osangularia lens Brotzen, 1940 †
- Osangularia malloryi Serova, 1966 †
- Osangularia navarroana (Cushman, 1938) †
- Osangularia plummerae Brotzen, 1940 †
- Osangularia undulata McCulloch, 1977
Chromista → Foraminifera → Globothalamea → Rotaliida → Chilostomelloidea → Alabaminidae
- Otosphaera
Chromista → Radiozoa → Latentifistularia → Latentifistulidae
- Ovatisporangium
- Ovipoculum