Thulin & al. • Phylogeny of the Turneraceae clade TAXON 61 (2) • April 2012: 308–323 Phylogeny of the Turneraceae clade (Passifloraceae s.l.): Trans-Atlantic disjunctions and two new genera in Africa Mats Thulin,1 Sylvain G. Razafimandimbison,2 Paul Chafe,3 Nahid Heidari,1 Anneleen Kool1 & Joel S. Shore3 1 Department of Systematic Biology, EBC, Uppsala University, Norbyvägen 18D, 752 36 Uppsala, Sweden 2 Bergius Foundation, The Royal Swedish Academy of Sciences and Botany Department, Stockholm University, 106 91 Stockholm, Sweden 3 Department of Biology, York University, 4700 Keele Street, Toronto, Ontario M3J 1P3, Canada Author for correspondence: Mats Thulin,
[email protected] Abstract Turneraceae, with just over 200 species in 10 genera, is today often included in a widely circumscribed Passifloraceae. The vast majority of the species are found in the New World, whereas generic diversity is largest in the Old World. According to current circumscriptions, three of the genera show trans-Atlantic disjunctions: Turnera with over 135 species in America and two species in Africa (one in the south-western and one in the north-eastern part), Piriqueta with 44 species in America and one in southern Africa, and Erblichia with one species in Central America and four in Madagascar. The phylogeny of Turneraceae is reconstructed based on DNA sequences from plastid trnL-F and nuclear ITS and sampling for all genera, including both New and Old World species for the trans-Atlantic groups to test their monophyly. The genera of Turneraceae form a strongly supported monophyletic group, the Turneraceae clade, within Passifloraceae s.l. The phylogeny is geographically structured, with one clade comprising American species only, except for the two African species of Turnera, and another clade with all other African species plus the Central American Erblichia odorata.