<i>Viburnum</i> phylogeny based on the chloroplast <i>trnK</i> intron and nuclear ribosomal ITS DNA sequences

TitleViburnum phylogeny based on the chloroplast trnK intron and nuclear ribosomal ITS DNA sequences
Publication TypeJournal Article
Year of Publication2004
AuthorsDonoghue MJ, Baldwin BG, Li J, Winkworth RC
JournalSystematic Botany
Volume29
Pagination188-198
ISSN03636445
KeywordsBiological Sciences, Botany & Plant Sciences
Abstract

Phylogenetic analyses of chloroplast trnK intron and nuclear ribosomal ITS DNA sequences yield significant improvements in our understanding of relationships, character evolution, and biogeography in Viburnum (Adoxaceae). We confirm that most of the ten traditionally recognized sections are monophyletic. The most striking exception is Odontotinus, which is divided into: (i) a purple-fruited New World clade within which the Latin American section Oreinotinus is nested, and (ii) an Old World, mostly red-fruited clade that is closely related to V. cylindricum (section Megalotinus) and the New World, purple-fruited V. acerifolium. We identify three major supra-sectional groupings: (i) a clade consisting of the Odontotinus-Oreinotinus-Megalotinus complex, the circum-boreal section Opulus, and the Eurasian section Tinus, (ii) a clade containing the Old World section Viburnum, the New World section Lentago, and, with less support, section Pseudotinus, and (iii) a clade containing the Asian s

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