*The figure after the name of each Division or Class gives an approximate numer of living species that have been described. (Pearson, L. C. 1995. The Diversity and Evolution of Plants. CRC Press. New York)

1.1. SUBKINGDOM Archaebacteriobionta (archaebacteria)

1.1.1. DIVISION Archaebacteriophyta methane, salt and sulfolobus bact.)

1.2. SUBKINGDOM Eubacteriobionta(true bacteria)

1.2.1. DIVISION Eubacteriophyta

1.2.1.1. Class Eubacteriae 2,000 (unpig, purple, green sulphur bacteria)

1.2.1.2. Class Cyanobacteriae 1,275 (blue-green bacteria)

1.2.1.3. Class Prochlorobacteriae 3 (prochlorobacteria)

2. KINGDOM: Protoctista

2.1. SUBKINGDOM: Phycobionta

2.1.1. DIVISION Xanthophyta 275 (yellow-green algae)

2.1.2. DIVISION Chrysophyta 400 (golden-brown algae)

2.1.3. DIVISION Dinophyta (Pyrrhophyta) 1,000 (dinoflagellates)

2.1.4. DIVISION Bacillariophyta 5,500 (diatoms)

2.1.5. DIVISION Cryptophyta 74 (cryptophytes)

2.1.6. DIVISION Haptophyta 250 (haptonema organisms)

2.1.7. DIVISION Euglenophyta 550 (euglenoids)

2.1.8. DIVISION Chlorophyta

2.1.8.1. Class Chlorophyceae 10,000 (green algae)

2.1.8.2. Class Charophyceae 200 (stoneworts)

2.1.9. DIVISION Phaeophyta 900 (brown algae)

2.1.10. DIVISION Rhodophyta 2,500 (red algae)

2.2. SUBKINGDOM: Mastigobionta 960

2.2.1. DIVISION Chytridiomycota 750 (chytrids)

2.2.2. DIVISION Oomycota (water molds) 475

2.3. SUBKINGDOM: Myxobionta 320

2.3.1. DIVISION Acrasiomycota (cellular slime molds) 21

2.3.2. DIVISION Myxomycota 500 (true slime molds)

3. KINGDOM: Fungi

3.0.1. DIVISION Zygomycota 570 (coenocytic fungi)

3.0.1.1 SUBDIVISION Zygomycotina

3.0.2. DIVISION Eumycota 350 (septate fungi)

3.0.2.1. SUBDIVISION Ascomycotina 56,000 (cup fungi)

3.0.2.2. SUBDIVISION Basidiomycotina 25,000 (club fungi)

3.0.2.3. SUBDIVISION Deuteromycotina 22,000 (imperfect fungi)

3.0.2.4. SUBDIVISION Lichenes 13,500

4. KINGDOM: Plantae

4.0.1. DIVISION Hepaticophyta 8,300 (liverworts)

4.0.2. DIVISION Anthocerotophyta 350 (hornworts)

4.0.3. DIVISION Bryophyta 13,500 (mosses)

4.0.4. DIVISION Psilotophyta 3 (whisk ferns)

4.0.5. DIVISION Lycophyta 850 (club mosses)

4.0.6. DIVISION Sphenophyta 25 (horsetails)

4.0.7. DIVISION Pterophyta 8,600 (ferns)

4.0.8. DIVISION Pinophyta (gymnosperms)

4.0.8.(1). SUBDIVISION Cycadicae 160 (cycads)

4.0.8.(2). SUBDIVISION Pinicae

4.0.8.(2).1. Class Ginkgoatae 1 (Ginkgo)

4.0.8.(2).2. Class Pinatae 700 (conifers)

4.0.8.(3). SUBDIVISION Gneticae 75

4.0.8.3.1 Order Gnetales (Gnetum)

4.0.8.3.2 Order Ephedrales (Ephedra)

4.0.8.3.3 Order Welwitschiales (Welwitschia)

4.0.9. DIVISION Magnoliophyta (flowering plants)

4.0.9.1. Class Magnoliopsida 200,000 (dicots)

4.0.9.2. Class Liliopsida 60,000 (monocots)

5. KINGDOM: Animalia

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