A system of plant taxonomy, the Thorne system of plant classification was devised by the American botanist Robert F. Thorne (1920–2015) in 1968, and he continued to issue revisions over many years (1968–2007).
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 together with several other classification systems.
For a discussion of the various suffixes used for superorders (-florae vs. -anae), see Brummitt 1992, and Thorne 1992. In this latter paper, Thorne sets out his reasons for abandoning -florae for -anae, following contemporary practice.
1968 System
Monocotyledons
Superorders
1992 System
The 1992 system lists 69 orders and 440 families
Summary
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
- Subclasses (12)
- 1. Chloranthidae
- 2. Magnoliidae [= dicotyledons]
- 3. Alismatidae
- 4. Liliidae - 3 superorders
- Pandananae
- Dioscoreanae
- Lilianae - 3 orders
- Liliales - 12 families
- Corsiaceae Becc., 1878
- Campynemataceae Dumort., 1829
- Melanthiaceae Batsch ex Borkh., 1797
- Trilliaceae Chevall., 1827
- Petermanniaceae Hutch., 1934
- Luzuriagaceae Lotsy, 1911 (incl. Drymophila R. Br.)
- Alstroemeriaceae Dumort., 1829
- Colchicaceae DC., 1804
- Rhipogonaceae Conran & Clifford, 1985
- Philesiaceae Dumort., 1829
- Smilacaceae Vent., 1799
- Liliaceae Juss., 1789
- Orchidales
- Iridales
- 5. Commelinidae
- 6. Ranunculidae
- 7. Hamamelididae
- 8. Caryophyllidae
- 9. Rosidae
- 10. Malvidae
- 11. Asteridae
- 12. Lamiidae
Note: Monocotyledons are represented here by 3 separate subclasses 3–5
References
- ^ 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)
- ^ Texas A&M Flowering Plant Gateway
Bibliography
- Reveal, James (22 November 1998). "Lists of the Flowering Plant Taxa Accepted by Cronquist, Dahlgren, Reveal, Takhtajan & Thorne". Vascular Plant Family Nomenclature. University of Maryland: Norton-Brown Herbarium. Retrieved 3 January 2016.
- Reveal, James L (29 March 1999a). "An updated classification of the Monocotyledoneae by Robert F Thorne". Plant Biology. University of Maryland: Norton-Brown Herbarium. Retrieved 4 January 2016.
- Reveal, James L (1999b). "Thorne System of Angiosperm Classification". Plant systematics.org. University of Maryland: Norton-Brown Herbarium. Retrieved 4 January 2016.
- Reveal, James L (1999c). "PBIO250 Lecture Notes. Plant Taxonomy: Systems of Vascular Plant Classification". Plant systematics.org. University of Maryland: Norton-Brown Herbarium. Retrieved 4 January 2016.
- Brummitt, R.K. (1992). Vascular plant families and genera : a listing of the genera of vascular plants of the world according to their families, as recognised in the Kew Herbarium, with an analysis of relationships of the flowering plant families according to eight systems of classification. Kew: Royal Botanic Gardens. ISBN 9780947643430.
- Singh, Gurcharan (2019) [2004]. Plant Systematics: An Integrated Approach (4th ed.). CRC Press. ISBN 978-1-00-057677-1.
Works by Thorne
- Thorne, R.F. (1968). "Synopsis of a putative phylogenetic classification of flowering plants". Aliso. 6 (4): 57–66. doi:10.5642/aliso.19680604.06.
- Thorne, Robert F (1976). "A Phylogenetic Classification of the Angiospermae". Evolutionary Biology. Vol. 9. pp. 35–106. doi:10.1007/978-1-4615-6950-3_2. ISBN 978-1-4615-6952-7. PMC 2645363. PMID 19208237.
- Thorne, Robert F (1977). "Some Realignments in the Angiospermae". In Kubitzki, Klaus (ed.). Flowering Plants: Evolution and Classification of Higher Categories Symposium, Hamburg, September 8–12, 1976. Plant Systematics and Evolution. Vol. Supplement 1. Vienna: Springer. pp. 299–319. doi:10.1007/978-3-7091-7076-2_19. ISBN 978-3-211-81434-5.
- Thorne, Robert F. (February 1983). "Proposed new realignments in the angiosperms". Nordic Journal of Botany. 3 (1): 85–117. doi:10.1111/j.1756-1051.1983.tb01447.x.
- Thorne, Robert F (1992a). "Classification and geography of flowering plants". Botanical Review. 58 (3): 225–348. Bibcode:1992BotRv..58..225T. doi:10.1007/BF02858611. S2CID 40348158.
- Thorne, Robert F (1992b). "An updated phylogenetic classification of the flowering plants". Aliso. 13 (2): 365–389. doi:10.5642/aliso.19921302.08.
- Thorne, Robert F (2000). "The classification and geography of the flowering plants: dicotyledons of the class Angiospermae". Botanical Review. 66 (4): 441–647. Bibcode:2000BotRv..66..441T. doi:10.1007/BF02869011. S2CID 43430454.
- Thorne, Robert F.; Reveal, James L. (April 2007). "An Updated Classification of the Class Magnoliopsida ("Angiospermae")". The Botanical Review. 73 (2): 67–181. doi:10.1663/0006-8101(2007)73[67:AUCOTC]2.0.CO;2. S2CID 24415895.