page_title: Nelson's taxonomic arrangement of Adenanthos
section_title: Nelson's arrangement
hierarchical_section_title: Nelson's taxonomic arrangement of Adenanthos / Nelson's arrangement
caption_attribution_description: Foliage of Adenanthos cygnorum. Photo taken at Wireless Hill Park, Perth, Western Australia
context_page_description: Ernest Charles Nelson's taxonomic arrangement of Adenanthos was the first modern-day arrangement of that plant genus. First published in his 1978 Brunonia article "A taxonomic revision of the genus Adenanthos", it superseded the arrangement of George Bentham, which had stood for over a hundred years. It was updated by Nelson in his 1995 treatment for the Flora of Australia series of monographs.
context_section_description: Nelson's arrangement of Adenanthos was first published in his article "A taxonomic revision of the genus Adenanthos (Proteaceae)", published in Brunonia in 1978. Eight new species and 4 new subspecies were published, bringing the number of species up to 32. In naming them, Nelson follows Labillardière in treating Adenanthos as having feminine gender, despite an ICBN recommendation (not rule) that names ending in -anthos be treated as masculine. Bentham's two sections are retained, but several additional diagnostic characteristics are given for them; and, in accordance with modern rules of botanical nomenclature, A. sect. Stenolaema is renamed to the autonym A. sect. Adenanthos. This Nelson further divides into two subsections, A. subsect. Anaclastos and A. subsect. Adenanthos. Detailed descriptions of each are given, but Nelson recommends perianth length as the most convenient key for distinguishing between them.
  Nelson's subsections were discarded by him in his 1995 treatment of Adenanthos for the Flora of Australia series of monographs. He retained the two sections, and listed 40 species. Masculine names were used in accordance with a 1994 ICBN ruling. The full arrangement is as follows:
  Adenanthos
  A. sect. Eurylaema
  A. detmoldii
  A. barbiger
  A. obovatus
  A. × pamela
  A. sect. Adenanthos
  A. drummondii
  A. dobagii
  A. apiculatus
  A. linearis
  A. pungens
  A. pungens subsp. pungens
  A. pungens subsp. effusus
  A. gracilipes
  A. venosus
  A. dobsonii
  A. glabrescens
  A. glabrescens subsp. glabrescens
  A. glabrescens subsp. exasperatus
  A. ellipticus
  A. cuneatus
  A. stictus
  A. ileticos
  A. forrestii
  A. eyrei
  A. cacomorphus
  A. flavidiflorus
  A. argyreus
  A. macropodianus
  A. terminalis
  A. sericeus
  A. sericeus subsp. sericeus
  A. sericeus subsp. sphalma
  A. × cunninghamii
  A. oreophilus
  A. cygnorum
  A. cygnorum subsp. cygnorum
  A. cygnorum subsp. chamaephyton
  A. meisneri
  A. velutinus
  A. filifolius
  A. labillardierei
  A. acanthophyllus
caption: Closeup of A. cygnorum foliage
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