Wikipedia

Dahlgren system

One of the modern systems of plant taxonomy, the Dahlgren system was published by monocot specialist Rolf Dahlgren in 1975[1] and revised in 1977,[2] and 1980.[3] However, he is best known for his two treatises on monocotyledons in 1982 [4] and revised in 1985.[5] His wife Gertrud Dahlgren continued the work after his death.[6]

Dahlgren ranked the dicotyledons and monocotyledons as subclasses of the class of flowering plants (angiosperms) and further divided them into superorders. Originally (1975) he used the suffix -anae, as did Cronquist, to designate these, but in 1980 changed this to -florae in accordance with Thorne. In the 1989 revision, published by his wife, the alternate names Magnoliidae and Liliidae were dropped in favour of Dicotyledon and Monocotyledon, and the suffix -florae reverted to -anae (e.g. Alismatanae for Alismatiflorae).

Reveal provides an extensive listing of Dahlgren's classification.[7] (Note the synonyms, both nomenclatural and taxonomic, for each name in the system.)

1980 system edit

Summary edit

Magnoliidae (dicotyledons) edit

1982 system (monocotyledons) edit

Summary edit

Six superorders

Details edit

1985 system (monocotyledons) edit

Summary edit

Ten superorders

Details edit

Liliiflorae edit

Ariflorae edit

Triuridiflorae edit

Alismatiflorae edit

Bromeliiflorae edit

Zingiberiflorae edit

Commeliniflorae edit

Cyclanthiflorae edit

Areciflorae edit

Pandaniflorae edit

Notes edit

References edit

  1. ^ Dahlgren 1975.
  2. ^ Dahlgren 1977.
  3. ^ Dahlgren 1980.
  4. ^ Dahlgren & Clifford 1982.
  5. ^ Dahlgren, Clifford & Yeo 1985.
  6. ^ Dahlgren 1989.
  7. ^ JL Reveal:Dahlgren System of Angiosperm Classification 1997

Bibliography edit

  • Dahlgren, Gertrud (July 1989). "An updated angiosperm classification". Botanical Journal of the Linnean Society. 100 (3): 197–203. doi:10.1111/j.1095-8339.1989.tb01717.x.
  • Dahlgren, R. (1975). "A system of classification of angiosperms to be used to demonstrate the distribution of characters". Botaniska Notiser. 128: 119–147.
  • Dahlgren, Rolf (1977). A commentary on a diagrammatic presentation of the angiosperms in relation to the distribution of character states. pp. 253–284., in Kubitzki (1977)
  • Kubitzki, Klaus, ed. (1977). Flowering Plants : Evolution and classification of higher categories. Symposium, Hamburg, September 8–12, 1976. Plant Systematics & Evolution - Supplementum 1. Wien: Springer. p. 416. ISBN 978-3-211-81434-5. Retrieved 13 August 2015.
  • Dahlgren, R. M. T. (February 1980). "A revised system of classification of the angiosperms". Botanical Journal of the Linnean Society. 80 (2): 91–124. doi:10.1111/j.1095-8339.1980.tb01661.x.
  • Dahlgren, Rolf; Clifford, H. T. (1982). The monocotyledons: A comparative study. London and New York: Academic Press.
  • Dahlgren, R.M.; Clifford, H.T.; Yeo, P.F. (1985). The families of the monocotyledons. Berlin: Springer-Verlag. ISBN 978-3-642-64903-5. Additional excerpts
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