A
system of plant taxonomy, the
Wettstein system recognised the following main groups, according to
- R. Wettstein (4th edition, 1935). Handbuch der Systematischen Botanik.
- I. phylum Schizophyta
- ::: 1. classis Schizophyceae
- ::: 2. classis Schizomycetes
- II. phylum Monadophyta
- III. phylum Myxophyta
- IV. phylum Conjugatophyta
- V. phylum Bacillariophyta
- VI. phylum Conjugatae
- VII. phylum Rhodophyta
- ::: 1. classis Bangieae
- ::: 2. classis Florideae
- VIII. phylum Euthallophyta
- ::: 1. classis Chlorophyceae
- ::: 2. classis Fungi
- :::A. Eumycetes
- :::: 1. subclassis Phycomycetes
- :::: 2. subclassis Ascomycetes
- :::: 3. subclassis Basidiomycetes
- :::B. Lichenes
- :::: 1. subclassis Ascolichenes
- :::: 2. subclassis Basidiolichenes
- IX. phylum Cormophyta
- : I. divisio Archegoniatae
- :: 1. subdivisio Bryophyta
- ::: 1. classis Musci
- ::: 2. classis Hepaticae
- :: 2. subdivisio Pteridophyta
- ::: 1. classis Psilophytinae
- ::: 2. classis Lycopodiinae
- ::: 3. classis Psilotinae
- ::: 4. classis Articulatae
- ::: 5. classis Filicinae
- : II. divisio Anthophyta
- :: 1. subdivisio Gymnospermae
- ::: 1. classis Pteridospermae
- ::: 2. classis Cycadinae
- ::: 3. classis Benettitinae
- ::: 4. classis Cordaïtinae
- ::: 5. classis Ginkgoinae
- ::: 6. classis Coniferae
- ::: 7. classis Gnetinae
- :: 2. subdivisio Angiospermae
- ::: 1. classis Dicotyledones
- :::: 1. subclassis Choripetalae
- ::::: A. Monochlamideae
- ::::: B. Dialypetalae
- :::: 2. subclassis Sympetalae
- ::: 2. classis Monocotyledones
Gymnospermae
- ::1. subdivisio Gymnospermae
- ::: 1. classis Pteridospermae (fossil only)
- ::: 2. classis Cycadinae
- :::::: 1. familia Cycadaceae
- :::::: 2. familia Zamiaceae
- ::: 3. classis Benettitinae (fossil only)
- ::: 4. classis Cordaïtinae (fossil only)
- ::: 5. classis Ginkgoinae
- :::::: 1. familia Ginkgoaceae
- ::: 6. classis Coniferae
- :::::: 1. familia Taxaceae
- :::::: 2. familia Cupressaceae
- :::::: 3. familia Abietaceae
- ::: 7. classis Gnetinae
- :::::: 1. familia Ephedraceae
- :::::: 2. familia Gnetaceae
- :::::: 3. familia Welwitschiaceae
Angiospermae