A taxonomic revision of the South African endemic genus arctopus (apiaceae, saniculoideae)

Anthony R. Magee, Ben Erik Van Wyk, Patricia M. Tilney, Michelle Van Der Bank

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


The genus Arctopus L. is revised. It is an anomalous member of the family Apiaceae, with several unusual morphological characters such as the prostrate spiny leaves, thick resinous tuberous roots, sessile female flowers with a homochlamydeous perianth, and pseudanthia formed by distinctive bracteoles. The three species of Arctopus were found to differ mainly in their reproductive morphologies, being easily distinguishable by the large involucral bracteoles that surround the female pseudanthia. The anatomy of the petiole as well as the morphology of the inflexed spines and leaf margins were also found to be useful diagnostic characters and are illustrated and discussed. Possible phylogenetic relationships were explored using both morphological and DNA sequence data (ITS). A formal taxonomic treatment is presented, including a key to the species, correct nomenclature, typification, descriptions, illustrations, and distribution maps.

Original languageEnglish
Pages (from-to)471-486
Number of pages16
JournalAnnals of the Missouri Botanical Garden
Issue number3
Publication statusPublished - Sept 2008


  • Apiaceae
  • Arctopus
  • ITS
  • IUCN red list
  • Phylogeny
  • Saniculoideae
  • Taxonomy

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Plant Science


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