Plant Systematics and Evolution

, Volume 157, Issue 1, pp 9-31

First online:

A new infrageneric classification and phylogenetic trends in the genusRhododendron (Ericaceae)

  • Wolfgang SpethmannAffiliated with

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Recent studies have improved the infrageneric classification ofRhododendron, including my own investigations on flavonoids and anthocyanins as chemosystematic markers. From a synoptical comparison of morphological, anatomical and phytochemical characters a new system for the genus is proposed. Phylogenetic character progressions and relationships among subgenera, sections and subsections are discussed and illustrated. Key positions for subg.Candidastrum between chori subgenerumRhododendron andNomazalea, and for subg.Choniastrum between chori subgenerumHymenanthes andNomazalea are suggested.

Key words

Angiosperms Ericaceae Rhododendron Systematics infrageneric classification phylogeny flavonoids anthocyanins flower colour