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1 April 2008 Phylogenetic Split of Malagasy and African Taxa of Protorhus and Rhus (Anacardiaceae) Based on cpDNA trnLtrnF and nrDNA ETS and ITS Sequence Data
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Abstract

The African-Malagasy genus Protorhus and the African-Malagasy species of Rhus s.l. have been suggested to be polyphyletic, but definitive evidence has been lacking. We investigated a clade of Anacardiaceae subfamily Anacardioideae in order to clarify evolutionary relationships of the African-Malagasy members of these two genera. Phylogenetic analysis of sequence data from cpDNA trnLtrnF, and nrDNA ETS and ITS provide strong statistical support for the 1) polyphyly of Protorhus; 2) monophyly of Malagasy Protorhus species; 3) polyphyly of Rhus section Baronia (Malagasy Rhus). These results support the need for new circumscriptions of these groups. Two new combinations are proposed, Searsia erosa and Searsia pendulina.

Susan K. Pell, John D. Mitchell, Porter P. Lowry, Armand Randrianasolo, and Lowell E. Urbatsch "Phylogenetic Split of Malagasy and African Taxa of Protorhus and Rhus (Anacardiaceae) Based on cpDNA trnLtrnF and nrDNA ETS and ITS Sequence Data," Systematic Botany 33(2), (1 April 2008). https://doi.org/10.1600/036364408784571545
Published: 1 April 2008
JOURNAL ARTICLE
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