Rhizochromulina

Axodines
Scientific classification
(unranked):	SAR
Phylum:	Heterokontophyta
Class:	Actinochrysophyceae
Order:	Dictyochales
Genus:	Rhizochromulina

Rhizochromulina is an unusual genus of marine heterokont algae, with one species, R. marina. They are colored amoeboids with a single flagellum, and produce distinctive spindle-shaped zoospores. These have a cell structure typical of the axodines. Before it was studied in detail, Rhizochromulina was included among the superficially similar golden algae in the order Chrysamoebales, but these produce zoospores which are similar to flagellate golden algae in form.

Eukaryota: SAR: Heterokonta or Stramenopiles

Domain: Archaea; Bacteria; Eukaryota
(Kingdom: Plant; Hacrobia; Heterokont; Alveolata; Rhizaria; Excavata; Amoebozoa; Animal; Fungi)

Ochrophyta
(photosynthetic)

Phaeista

Hypogyristea

Pinguiophyceae
Pelagophyceae
Axodines/Actinochrysophyceae
- Dictyochales/Silicoflagellates
- Rhizochromulinales
- Actinodines
  - Pedinellales
  - Ciliophryida
  - Actinophryida
- Florenciellales

Chrysista

Chrysophyceae, golden algae	Chromulinales Chrysosphaerales Hibberdiales Hydrurales Phaeothamniales

Eustigmatophyceae	Eustigmataceae Monodopsidaceae Pseudocharaciopsidaceae

Phaeophyceae, brown algae	Ascoseirales Cutleriales Desmarestiales Dictyotales Discosporangiales Ectocarpales Fucales Ishigeales Laminariales Nemodermatales Onslowiales Ralfsiales Scytosiphonales Scytothamnales Sphacelariales Sporochnales Syringodermatales Tilopteridales

Phaeothamniophyceae	Phaeothamniales Pleurochloridellales

Raphidophyceae	Chattonella, Fibrocapsa, Gonyostomum, Haramonas, Heterosigma, Vacuolaria

Synurophyceae	Heterogloeales Ochromonadales Rhizochloridales Synurales

Xanthophyceae, yellow-green algae	Botrydiales Mischococcales Tribonematales Vaucheriales

Khakista

Bolidophyceae

Bolidomonas

Bacillariophyta,
diatoms

Coscinodiscophyceae	Biddulphiophycidae Chaetocerotophycidae Corethrophycidae Coscinodiscophycidae Cymatosirophycidae Lithodesmiophycidae Rhizosoleniophycidae Thalassiosirophycidae

Bacillariophyceae	Bacillariales Naviculales

Fragilariophyceae	Fragilariales

Heterotrophic
groups

Pseudofungi

Bigyra

Sagenista	Bicosoecea Labyrinthulomycetes

Opalinata/Slopalinida	Opalinidae Proteromonadidae Blastocystis

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