title: Home at last: the enigmatic genera Eriachaenium and Adenocaulon (Compositae, Mutisioideae, Mutisieae, Adenocaulinae).
abstract: The genera Eriachaenium and Adenocaulon (Compositae) have distinct but complex histories and both have been placed in a number of tribes across the family. For the first time the two genera are included in a molecular study and the results show that they are best placed in the tribe Mutisieae s.s. and are the only genera in the re-instated subtribe Adenocaulinae. When described, this subtribe contained only Adenocaulon and was found in the Inuleae. The study also confirms one of the conclusions of a recent morphological study that Eriachaenium and Adenocaulon are sister taxa. Past difficulties in tribal assignment are attributed to the distinct and unusual morphology of each genus. Both genera and the subtribe are described and a key to separate the genera is provided.
authors.affiliation: Department of Botany, NMNH, Smithsonian Institution, Washington D.C., USA.
authors.forename: Vicki A
authors.initials: VA
authors.lastname: Funk
authors.affiliation: Department of Botany, NMNH, Smithsonian Institution, Washington D.C., USA; Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Botânica, Av. Bento Gonçalves 9500, CEP 91501-970, Porto Alegre, RS, Brazil.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Pasini
authors.affiliation: Department of Botany, NMNH, Smithsonian Institution, Washington D.C., USA; Laboratorio de Botánica, Facultad de Agronomía, Universidad de la República, Av. Garzón 780, Sayago, Montevideo, CP, 12900, Uruguay.
authors.forename: J Mauricio
authors.initials: JM
authors.lastname: Bonifacino
authors.affiliation: Department of Botany, NMNH, Smithsonian Institution, Washington D.C., USA; División Plantas Vasculares, Museo de La Plata, Paseo del Bosque s/n, CP 1900, La Plata, Argentina.
authors.forename: Liliana
authors.initials: L
authors.lastname: Katinas
keywords: Asia-North America disjunct; Asteraceae; Patagonia; dimorphic flowers; endemism