A revised infrageneric classification of old world species of dioscorea (Dioscoreaceae)

Hiroshi Noda, Shizuka Fuse, Jun Yamashita, Rachun Pooma, Manop Poopath, Hiroshi Tobe, Minoru N. Tamura

    Research output: Contribution to journalArticlepeer-review


    Dioscorea (Dioscoreaceae), a morphologically diverse genus, consists of more than 600 species distributed worldwide. Recent molecular and morphological analyses allowed us to recognize two subgenera, Dioscorea and Helmia, and 19 Old World species groups (sections) in subgenus Helmia. In this paper we present a diagnostic key and taxonomic treatment for the subgenera and sections, including D. sect. Tamus (stat. nov.) and four new sections; Afroborderea, Perennia (validated here), Pseudoshannicorea and Pseudostenophora. Lectotype species for eleven sections; Enantiophyllum, Illigerastrum, Lasiophyton, Macrocarpaea, Macropoda, Madagascarienses, Orientali-asiaticae, Rhacodophyllum, Shannicorea, Stenophora and Syntepaleia, are also designated.

    Original languageEnglish
    Pages (from-to)187-199
    Number of pages13
    JournalActa Phytotaxonomica et Geobotanica
    Issue number3
    Publication statusPublished - 2020


    • Dioscorea
    • Dioscorea sect. Afroborderea
    • Dioscorea sect. Perennia
    • Dioscorea sect. Pseudoshannicorea
    • Dioscorea sect. Pseudostenophora
    • Dioscorea sect. Tamus
    • Dioscorea subg. Helmia
    • Dioscoreaceae
    • Lectotypification
    • Taxonomy

    ASJC Scopus subject areas

    • Ecology, Evolution, Behavior and Systematics
    • Ecology
    • Plant Science


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