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Scientific classification
Domain: Eukarya
(unranked): SAR
Phylum: Stramenopiles
(unranked): Ochrophyta
Cavalier-Smith, 1995[1]
  • Heterokontophyta van den Hoek et al., 1978
  • Ochrista Cavalier-Smith, 1986[2][3]
  • Stramenochromes Leipe et al., 1994[4]

Ochrophyta is a group of mostly photosynthetic heterokonts.[5][6]

The classification of the group is still being worked out. Some authors (e.g., Cavalier-Smith) divide it into two subphyla, Phaeista Cavalier-Smith 1995 (comprising Hypogyristea and Chrysista in some classifications, or Limnista and Marista in others) and Khakista Cavalier-Smith, 2000 (comprising Bolidomonas and diatoms).[7] Others prefer not to use the subphyla, listing only lower taxa (e.g., Reviers, 2002, Guiry & Guiry, 2014).


  1. ^ Cavalier-Smith, T. (1995). Zooflagellate phylogeny and classification. Cytology, 37, 1010–1029.
  2. ^ Cavalier-Smith, T. (1986). The kingdom Chromista, origin and systematics. In: Round, F.E. and Chapman, D.J. (eds.). Progress in Phycological Research. 4: 309–347.
  3. ^ Reviers, B. de. (2006). Biologia e Filogenia das Algas. Editora Artmed, Porto Alegre, p. 157.
  4. ^ Reviers, B. de. (2006). Biologia e Filogenia das Algas. Editora Artmed, Porto Alegre, pp. 15-16.
  5. ^ Thomas Cavalier-Smith & Ema E.-Y. Chao (2006). "Phylogeny and megasystematics of phagotrophic heterokonts (kingdom Chromista)". Journal of Molecular Evolution 62 (4): 388–420. doi:10.1007/s00239-004-0353-8. PMID 16557340. 
  6. ^ Ingvild Riisberga, Russell J. S. Orr, Ragnhild Kluge, Kamran Shalchian-Tabrizi, Holly A. Bowers, Vishwanath Patil, Bente Edvardsen & Kjetill S. Jakobsen (2009). "Seven gene phylogeny of heterokonts". Protist 160 (2): 191–204. doi:10.1016/j.protis.2008.11.004. PMID 19213601. 
  7. ^ "Heterokontophyta". SHIGEN. National Institute of Genetics. Retrieved June 18, 2009.