Between brackets is the number of accepted marine extant species
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Shows the number of accepted marine extant species within the taxon
The last expanded taxon is highlighted
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- Biota (247 559)
- Kingdom Animalia (211 524)
- Kingdom Archaea (117)
- Kingdom Bacteria (2 223)
- Kingdom Chromista (20 790)
- Kingdom Fungi (1 432)
- Kingdom Monera represented as Bacteria
- Kingdom Plantae (10 581)
- Subkingdom Biliphyta (7 647)
- Subkingdom Viridiplantae (2 907)
- Infrakingdom Streptophyta (383)
- Phylum (Division) Bryophyta (7)
- Phylum (Division) Charophyta (40)
- Class Charophyceae (32)
- Class Conjugatophyceae
- Class Klebsormidiophyceae
- Class Zygnematophyceae (8)
- Subclass Zygnematophycidae (8)
- Order Desmidiales (6)
- Family Desmidiaceae Ralfs, 1848 (6)
- Genus Bourrellyodesmus Compère, 1977 (1)
- Genus Calocylindrus (C.Nägeli) O.Kirchner, 1878 accepted as Cosmarium Corda ex Ralfs, 1848 (1)
- Genus Cosmarium Corda ex Ralfs, 1848 (1)
- Genus Hexasterias Ehrenberg ex Agassiz, 1843 accepted as Staurastrum Meyen ex Ralfs, 1848 (1)
- Genus Pleurotaenium Nägeli, 1849 (1)
- Genus Staurastrum Meyen ex Ralfs, 1848 (1)
- Species Staurastrum orbiculare Meneghini ex Ralfs, 1848
- Family Gonatozygaceae G.S.West, 1927
- Order Spirogyrales (2)
- Phylum (Division) Tracheophyta (336)
- Phylum (Division) Chlorophyta (2 516)
- Phylum (Division) Prasinodermatophyta (8)
- Phylum (Division) Chlorarachniophyta accepted as Chlorarachnea (15)
- Phylum (Division) Chloroplastida
- Phylum (Division) Craspediophyta accepted as Choanozoa
- Phylum (Division) Craspedophyta accepted as Choanozoa
- Phylum (Division) Euglenophyta accepted as Discomitochondria
- Phylum (Division) Glaucophyta
- Phylum (Division) Picozoa (1)
- Phylum (Division) Plantae incertae sedis (11)
- Phylum (Division) Prasinophyta accepted as Prasinophyceae
- Phylum (Division) Prymnesiophyta accepted as Prymnesiophyceae
- Phylum (Division) Rhodelphidia
- Kingdom Protozoa (766)
- Kingdom Viruses (115)
