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 systemEdit

SummaryEdit

Magnoliidae (dicotyledons)Edit

1982 system (monocotyledons)Edit

SummaryEdit

Six superorders

DetailsEdit

1985 system (monocotyledons)Edit

SummaryEdit

Ten superorders

DetailsEdit

LiliifloraeEdit

ArifloraeEdit

TriuridifloraeEdit

AlismatifloraeEdit

BromeliifloraeEdit

ZingiberifloraeEdit

CommelinifloraeEdit

CyclanthifloraeEdit

ArecifloraeEdit

PandanifloraeEdit

NotesEdit

ReferencesEdit

BibliographyEdit

  • 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.CS1 maint: ref=harv (link)
  • Dahlgren, R. (1975). "A system of classification of angiosperms to be used to demonstrate the distribution of characters". Botaniska Notiser. 128: 119–147.CS1 maint: ref=harv (link)
  • Dahlgren, Rolf (1977). A commentary on a diagrammatic presentation of the angiosperms in relation to the distribution of character states. pp. 253–284.CS1 maint: ref=harv (link), 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.CS1 maint: ref=harv (link)
  • 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.CS1 maint: ref=harv (link)
  • Dahlgren, Rolf; Clifford, H. T. (1982). The monocotyledons: A comparative study. London and New York: Academic Press.CS1 maint: ref=harv (link)
  • Dahlgren, R.M.; Clifford, H.T.; Yeo, P.F. (1985). The families of the monocotyledons. Berlin: Springer-Verlag. ISBN 978-3-642-64903-5.CS1 maint: ref=harv (link) Additional excerpts