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On the circumscription of the Blennospermatinae (Asteraceae, Senecioneae) based on ndh F sequence data

1999; Wiley; Volume: 48; Issue: 1 Linguagem: Inglês

10.2307/1224612

1996-8175

Ulf Swenson, Kåre Bremer,

Plant Taxonomy and Phylogenetics

Summary Swenson, U. & Bremer, K.: On the circumscription of the Blennospermatinae (Asteraceae, Senecioneae) based on ndh F sequence data. – Taxon 48: 7‐14. 1999. – ISSN 0040‐0262. The subtribe Blennospermatinae is usually defined to comprise four genera (Abrotanella, Blennosperma, Crocidium, and Ischnea). The placement of Abrotanella in the Blennospermatinae has been disputed, and the monogeneric subtribe Abrotanellinae was recently erected. A cladistic analysis of ndh F sequence data provides strong support for grouping Blennosperma with the Senecioneae, while Abrotanella is only weakly associated with the Senecioneae and does not form a monophyletic group with Blennosperma. Crocidium and Ischnea (not sequenced) are morphologically close to Blennosperma. Hence, the Blennospermatinae are best circumscribed to include only Blennosperma, Crocidium, and Ischnea, but not Abrotanella. The tribal position of Abrotanella remains uncertain.