A system of plant taxonomy, the Wettstein system recognised the following main groups, according to Richard Wettstein's Handbuch der Systematischen Botanik (1901–1924).
3rd edition (1924)
Outline
Synopsis
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Flagellatae p. 65
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Myxophyta p. 69
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Schizophyta
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Schizophyceae
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Schizomycetes
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Zygophyta
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Peridinieae
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Bacillarieae
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Conjugatae
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Phaeophytae
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Rhodophyta
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Euphallophyta
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Chlorophyceae
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Fungi
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Eumycetes
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Phycomycetes
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Ascomycetes
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Basidiomycetes
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Lichenes
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Ascolichenes
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Basidiolichenes
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Cormophyta
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Archegoniatae
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Bryophyte
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Pteridophyta
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Psilophytinae
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Lycopodiinae
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Psilotinae
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Equisetinae
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Isoëtinae
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Filicinae
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Cycadofilicinae
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Anthophyta
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Gymnospermae
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Cycadinae
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Bennettitinae
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Cordaitinae
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Gingkoinae
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Coniferae
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Gnetinae
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Angiospermae p. 467
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Dicotyledones p. 539
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Choripetalae
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Monochlamydeae p. 540
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Dialypetalae
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Sympetalae
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Monocotyledones p. 848
Scheme
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Flagellatae p. 65
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I. phylum Schizophyta
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::: 1. classis Schizophyceae
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::: 2. classis Schizomycetes
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II. phylum Monadophyta
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III. phylum Myxophyta p. 69
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IV. phylum Conjugatophyta
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V. phylum Bacillariophyta
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VI. phylum Conjugatae
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VII. phylum Rhodophyta
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::: 1. classis Bangieae
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::: 2. classis Florideae
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VIII. phylum Euthallophyta
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::: 1. classis Chlorophyceae
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::: 2. classis Fungi
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:::A. Eumycetes
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:::: 1. subclassis Phycomycetes
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:::: 2. subclassis Ascomycetes
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:::: 3. subclassis Basidiomycetes
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:::B. Lichenes
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:::: 1. subclassis Ascolichenes
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:::: 2. subclassis Basidiolichenes
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IX. phylum Cormophyta
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: I. divisio Archegoniatae
Bryophyta
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:: 1. subdivisio Bryophyta
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::: 1. classis Musci
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::: 2. classis Hepaticae
Pteridophyta
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:: 2. subdivisio Pteridophyta
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::: 1. classis Psilophytinae
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::: 2. classis Lycopodiinae
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::: 3. classis Psilotinae
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::: 4. classis Articulatae
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::: 5. classis Filicinae
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: II. divisio Anthophyta
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:: 1. subdivisio Gymnospermae
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::: 1. classis Pteridospermae
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::: 2. classis Cycadinae
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::: 3. classis Benettitinae
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::: 4. classis Cordaïtinae
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::: 5. classis Ginkgoinae
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::: 6. classis Coniferae
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::: 7. classis Gnetinae
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:: 2. subdivisio Angiospermae
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::: 1. classis Dicotyledones
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:::: 1. subclassis Choripetalae
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::::: A. Monochlamideae
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::::: B. Dialypetalae
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:::: 2. subclassis Sympetalae
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::: 2. classis Monocotyledones
Gymnospermae
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::1. subdivisio Gymnospermae
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::: 1. classis Pteridospermae (fossil only)
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::: 2. classis Cycadinae
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:::::: 1. familia Cycadaceae
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:::::: 2. familia Zamiaceae
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::: 3. classis Benettitinae (fossil only)
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::: 4. classis Cordaïtinae (fossil only)
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::: 5. classis Ginkgoinae
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:::::: 1. familia Ginkgoaceae
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::: 6. classis Coniferae
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:::::: 1. familia Taxaceae
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:::::: 2. familia Cupressaceae
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:::::: 3. familia Abietaceae
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::: 7. classis Gnetinae
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:::::: 1. familia Ephedraceae
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:::::: 2. familia Gnetaceae
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:::::: 3. familia Welwitschiaceae
Angiospermae
Dicotyledones
Monocotyledones
Bibliography
Reviews
First edition
Second edition