If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

Open Access A novel phylogeny-based generic classification for Chenopodium sensu lato, and a tribal rearrangement of Chenopodioideae (Chenopodiaceae)

 Download
(PDF 3,669.7kb)
 
Download Article:

Abstract:

Molecular phylogenetic analysis of the subfamily Chenopodioideae of the goosefoot family (Chenopodiaceae), with the addition of matK/trnK sequences to an existing trnL-F data set, indicates that Chenopodium as traditionally recognised consists of six independent lineages. One of these, the Dysphania-Teloxys clade, had already been recognised previously as a separate tribe Dysphanieae. Of the five others, Chenopodium is here re-defined in a narrow sense so as to be monophyletic. The C. polyspermum, C. rubrum and C. murale clades are successive sisters of a lineage constituted by Atripliceae s.str. plus Chenopodium s.str. Consequently, the long forgotten genera Lipandra (for C. polyspermum) and Oxybasis (for C. rubrum and relatives) are revived, and the new genus Chenopodiastrum (for C. murale and relatives) is published. The afore-mentioned five clades, taken together, are a monophylum corresponding to an enlarged tribe Atripliceae (a name that has priority over Chenopodieae). Last, the linnaean genus Blitum (for C. capitatum and relatives), enlarged to include C. bonus-henricus, is the sister group of Spinacia in the tribe Anserineae (a name that has priority over Spinacieae). The aromatic species of Dysphania, the related genus Teloxys, as well as Cyclocoma and Suckleya form the enlarged tribe Dys phanieae. Building upon phylogenetic results, the present study provides a modern classification for a globally distributed group of plants that had suffered a complex taxonomic history due to divergent interpretation of single morphological characters for more than two hundred years. The seven genera among which the species traditionally assigned to Chenopodium are now distributed are defined morphologically and keyed out; for four of them (Blitum, Chenopodiastrum, Lipandra, Oxybasis) the component species and subspecies are enumerated and the necessary nomenclatural transfers are effected.
More about this publication?
  • Willdenowia is an international peer-reviewed journal publishing original research papers in English from the entire fields of plant, algal and fungal systematics, covering the evolution, taxonomy and nomenclature of these organisms as well as related fields such as floristics and plant geography. Three issues appear each year (in April, August and December) in an open-access online edition and a print edition. Individual papers may be published in the online edition as fast-track articles ahead of inclusion in these issues.

    Impact Factor (2012): 0.328

  • Information for Authors
  • Submit a Paper
  • Subscribe to this Title
  • Willdenowia (and precursors) electronic back issues (1895-1995) have been released in 2007.
  • ingentaconnect is not responsible for the content or availability of external websites
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more