levels of classification
.

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Divisions

Thallophytes

 Algae

Cyanophyta (blue-green algae)

Euglenophyta (euglenoids)

Chlorophyta (green algae)

Chrysophyta (yellow-green algae and diatoms)

Phaeophyta (brown algae)

Pyrrophyta (dinoflagellates)

Rhodophyta (red algae)

 Fungi

Schizomycophyta (slime moulds)

Eumycophyta (true fungi)

Classes
Phycomycetes 
Ascomycetes
Basidomycetes
Deuteromycetes (fungi imperfecti)

Bryophytes

Bryophyta (mosses, liverworts)
Classes
Musci
Hepaticae
Anthocerotae

Tracheophytes

Psilophyta (fork ferns)

Lycophyta (clubmosses)

Sphenophyta (horsetails)

Polypodiophyta (ferns and fern allies)


 Seed-bearing plants

Pinophyta (conifers and cycads)

Magnoliophyta (or Angiospermae) (flowering plants)

Class
   Subclass
      Order
         Suborder
            Family
               Tribe
                  Subtribe
                     Genus
                        species
                           subspecies
                              variety
                                 form

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Don Sands