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Issue: Vol. 739 No. 1: 23 Jan. 2026
Type: Article
Published: 2026-01-23
DOI: 10.11646/phytotaxa.739.1.6
Page range: 94-102
Abstract views: 133
PDF downloaded: 11

Pelseria, a new genus of Asteraceae—Senecioneae segregated from Senecio in southern South America

División Plantas Vasculares, Museo Argentino de Ciencias Naturales (MACN-CONICET), Av. Ángel Gallardo 470, C1405DJR Ciudad de Buenos Aires, Argentina
Instituto de Botánica Darwinion (ANCEFN–CONICET), Labardén 200, CC 22, B1642HYD, San Isidro, Buenos Aires, Argentina
Instituto de Botánica Darwinion (ANCEFN–CONICET), Labardén 200, CC 22, B1642HYD, San Isidro, Buenos Aires, Argentina
Instituto de Botánica Darwinion (ANCEFN–CONICET), Labardén 200, CC 22, B1642HYD, San Isidro, Buenos Aires, Argentina
Compositae Senecio otites Senecio section Otites Taxonomy Eudicots

Abstract

Pelseria S.E.Freire & Urtubey, a new monotypic genus, is described to accommodate Senecio otites from S. sect. Otites. The new genus is a perennial herb with large petiolate leaves and auriculate stipules, occurring in southern Argentina and Chile. The style morphology of Pelseria resembles that of Dendrophorbium and Hoehnephytum due to the subconvex style tips with short sweeping-hairs. Molecular evidence from nuclear and plastid DNA sequences place Pelseria in a clade with Graphistylis dichroa, Hoehnephytum trixoides, Dendrophorbium bomanii, and Arbelaezaster ellsworthii. A key to the similar genera found in Argentina and Chile is provided, as well as a distribution map of the new genus.

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How to Cite

Freire, S.E., Pozner, R., Mendoza, F.T. & Urtubey, E. (2026) Pelseria, a new genus of Asteraceae—Senecioneae segregated from Senecio in southern South America. Phytotaxa 739 (1): 94–102. https://doi.org/10.11646/phytotaxa.739.1.6