Open AccessPhylogenetic relationships of I cacinaceae focusing on the vining genera
Author(s) -
Byng James W.,
Bernardini Benedetta,
Joseph Jeffrey A.,
Chase Mark W.,
Utteridge Timothy M. A.
Publication year - 2014
Publication title -
botanical journal of the linnean society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.872
H-Index - 68
eISSN - 1095-8339
pISSN - 0024-4074
DOI - 10.1111/boj.12205
Subject(s) - polyphyly , biology , synapomorphy , ndhf , monophyly , clade , pantropical , sister group , phylogenetic tree , zoology , botany , evolutionary biology , genus , biochemistry , gene
Phylogenetic relationships of the pantropical and polyphyletic family I cacinaceae were investigated, focusing on the O ld W orld vining genera. Plastid ndh F , rbc L and mat K sequences from taxa representing 32 of the 36 currently recognized genera were analysed with maximum parsimony and Bayesian methods. As in previous studies, our results show that the family is divided into several poorly resolved groups. An evaluation of the traditional tribal classification revealed I odeae as polyphyletic and the monogeneric S arcostigmateae as sister to a monophyletic Phytocreneae (with the inclusion of R hyticaryum ). In I odeae, the monospecific, eastern M alesian P olyporandra was embedded in the O ld W orld I odes . A strongly supported clade containing P hytocreneae plus R hyticaryum was present in the I cacina group. The tropical A frican genera C hlamydocarya and P olycephalium were embedded in the O ld W orld P yrenacantha . Further relationships in the family and potential synapomorphic characters of the clades are discussed. New combinations are made for P olyporandra and C hlamydocarya / P olycephalium spp., which are formally synonymized with I odes and P yrenacantha , respectively. Conclusions about family‐level relationships (and circumscription) cannot be reached with these data because of several weakly supported inter‐relationships between some clades, such as C assinopsis , P latea/ C alatola and the E mmotum group. © 2014 The Linnean Society of London, Botanical Journal of the Linnean Society , 2014, 176 , 277–294.