Phylogeny of Aristolochiaceae based on parsimony, likelihood, and Bayesian analyses oftrnL-trnF sequences

Neinhuis, C.; Wanke, S.; Hilu, K. W.; Müller, K.; Borsch, T.
January 2005
Plant Systematics & Evolution;Jan2005, Vol. 250 Issue 1/2, p7
Academic Journal
Aristolochiaceae, a family of worldwide distribution comprising about 500 species, is a member of Piperales. Although Piperales is clearly monophyletic, the precise relationship within the order is ambiguous due to inconsistent placement ofLactoris fernandeziana. The appearance in some studies ofLactoriswithin Aristolochiaceae and the incongruence in generic treatments have also raised questions about the infrastructure of the family. This study addresses the overall generic relationships in Aristolochiaceae and its position in Piperales based on dense taxon sampling and sequence data from the plastidtrnL-F region. The study resolved Piperales consisting of two major clades (Piperaceae plus Saururaceae and Lactoridaceae plus Aristolochiaceae) andLactorisnested within Aristolochiaceae but with low support. The concept of two subfamilies in Aristolochiaceae, Asaroideae and Aristolochioideae, gains maximum statistical support. A generic treatment of Aristolochiaceae based ontrnL-F is proposed which is congruent with recent analyses based on morphological characters.


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