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New subtribal and generic limits in the tribe Athroismeae (Asteraceae) and further disintegration of the subtribe Madagasterinae of the tribe Astereae
Swedish Museum of Natural History, Department of Botany.
Swedish Museum of Natural History, Department of Botany.
2024 (English)In: Willdenowia, ISSN 0511-9618, E-ISSN 1868-6397, Vol. 54, no 1, p. 103-116Article in journal (Refereed) Published
Abstract [en]

The Astereae subtribe Madagasterinae (Asteraceae) sensu Nesom encompassing four Malagasy genera (Apodocephala, Madagaster, Rochonia and Vernoniopsis) is polyphyletic, as Apodocephala is a member of the Malagasy subtribe Lowryanthina of the tribe Athroismeae. While Madagaster was shown to belong to Astereae, the phylogenetic positions of Rochonia and Vernoniopsis (now Jalantzia) in this tribe remained to be tested with molecular data. Lowryanthinae presently contains Apodocephala with nine species and the monospecific Lowryanthus. The monophyly of Apodocephala remained to be assessed using a comprehensive sampling. The aims were to: (1) assess the phylogenetic placements of Rochonia and Jalantzia (Vernoniopsis) and test the monophyly of Jalantzia; (2) assess phylogenetic relationships within Lowryanthinae; and (3) re-assess the subtribal and generic limits within the tribe Athroismeae. New phylogenetic analyses based on plastid sequence data confirmed the position of Rochonia in Astereae. Jalantzia (Vernoniopsis) was resolved as sister to the subtribe Lowryanthinae and therefore transferred to Athroismeae. A new subtribe, Jalantziinae, is described to accommodate Jalantzia. Apodocephala is paraphyletic with respect to Lowryanthus, which is formally merged with Apodocephala. A description of the emended subtribe Madagasterinae containing Madagaster and Rochonia is presented.

Place, publisher, year, edition, pages
2024. Vol. 54, no 1, p. 103-116
Keywords [en]
Apodocephala, Asteraceae, Astereae, Athroismeae, Compositae, Jalantzia, Jalantziinae, Lowryanthinae, Lowryanthus, Madagascar, Madagaster, Madagasterinae, molecular phylogeny, Rochonia, Vernoniopsis
National Category
Biological Sciences
Research subject
Diversity of life
Identifiers
URN: urn:nbn:se:nrm:diva-5585OAI: oai:DiVA.org:nrm-5585DiVA, id: diva2:1859861
Available from: 2024-05-22 Created: 2024-05-22 Last updated: 2024-05-28Bibliographically approved

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