Biology:Thorne system

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A system of plant taxonomy, the Thorne system of plant classification was devised by the American botanist Robert F. Thorne (1920–2015) in 1968,[1] and he continued to issue revisions over many years (1968–2007).[1][2][3][4][5][6][7][8] Some versions of the system are available online. The Bioinformatics Working Group Center for the Study of Digital Libraries at Texas A&M University lists the March 1999 version[9] (and other classification systems).[10] James Reveal's course lecture notes (1999) also gives an account of the Thorne system at that time, with an extensive listing of synonyms, both nomenclatural and taxonomic, for each name in the system[11] together with several other classification systems.[12]

For a discussion of the various suffixes used for superorders (-florae vs. -anae), see Brummitt 1992,[13] and Thorne 1992.[5] In this latter paper, Thorne sets out his reasons for abandoning -florae for -anae, following contemporary practice.

1968 System

Monocotyledons

Superorders

  • Superorder Alimatiflorae
  • Superorder Triuridiflorae
  • Superorder Liliiflorae
    Order Liliales
  • Superorder Ariflorae
  • Superorder Commeliniflorae

1992 System

The 1992 system lists 69 orders and 440 families

Summary

  • Class Magnoliopsida [= angiosperms ]
    Subclass Magnoliidae [= dicotyledons ]
    Superorder Magnolianae
    Superorder Nymphaeanae
    Superorder Rafflesianae
    Superorder Caryophyllanae
    Superorder Theanae
    Superorder Celastranae
    Superorder Malvanae
    Superorder Violanae
    Superorder Santalanae
    Superorder Geranianae
    Superorder Rutanae
    Superorder Proteanae
    Superorder Rosanae
    Superorder Cornanae
    Superorder Asteranae
    Superorder Solananae
    Superorder Loasanae
    Superorder Myrtanae
    Superorder Gentiananae
    Subclass Liliidae [= monocotyledons ]
    Superorder Lilianae
    Superorder Hydatellanae
    Superorder Triuridanae
    Superorder Alismatanae
    Superorder Aranae
    Superorder Cyclanthanae
    Superorder Pandananae
    Superorder Arecanae
    Superorder Commelinanae

Magnoliidae

Liliidae

2007 System

The 2007 system lists 12 subclasses, 35 superorders, 87 orders, 40 suborders, and 472 families. It uses the suffixes given in the following example.

Class Magnoliopsida ("Angiospermae") - 12 subclasses

  • Subclass Magnoliidae
    • Superorder: Magnolianae
      • Order: Magnoliales
        • SubOrder: Magnoliineae
          • Family: Magnoliaceae
            • SubFamily: Magnolioideae
              • Tribe: Magnolieae
Subclasses (12)

Note: Monocotyledons are represented here by 3 separate subclasses 3–5[14]

References

  1. ↑ 1.0 1.1 Thorne 1968.
  2. ↑ Thorne 1976.
  3. ↑ Thorne 1977.
  4. ↑ Thorne 1983.
  5. ↑ 5.0 5.1 Thorne 1992a.
  6. ↑ Thorne 1992b.
  7. ↑ Reveal 1999a.
  8. ↑ Thorne & Reveal 2007.
  9. ↑ Robert F. Thorne. 1992. Classification and Geography of Flowering Plants. Botanical Review 58: 225-348 as updated December, 1992 and March, 1999. Source for March 1999 in (Reveal 1999a)
  10. ↑ Texas A&M Flowering Plant Gateway
  11. ↑ Reveal 1999b.
  12. ↑ Reveal 1999c.
  13. ↑ Brummitt 1992, pp. 770–776.
  14. ↑ Singh 2019, p. 260.

Bibliography

Works by Thorne



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