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Systematic relationships in southern African Oxalis L. (Oxalidaceae): congruence between palynological and plastid trnL-F evidence

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Abstract:

In the most recent morphology-based taxonomic classification of African Oxalis L., 206 species were recognized in nine indigenous southern African sections. A subsequent palynological review of these taxa conflicted with their taxonomic classification. In the present study, phylogenetic relationships within section Angustatae subsection Lineares are re-assessed, using plastid trnL-F non-coding DNA sequence data. The results of this study clearly indicate that, based on the DNA evidence, subsection Lineares is non-monophyletic. Previously hypothesized relationships within the subsection are also refuted. In contrast, molecular and palynological data are highly congruent, and both differ substantially from the current morphological classification for subsection Lineares.

Keywords: LINEARES; OXALIS; PALYNOLOGY; PARAPHYLETIC; TRNL-F

Document Type: Research Article

Affiliations: 1: Botany Department, University of Stellenbosch, Private Bag X1, Matieland, 7601, South Africa. 2: Biochemistry Department, University of Stellenbosch, Private Bag X1, Matieland, 7601, South Africa.

Publication date: November 1, 2004

iapt/tax/2004/00000053/00000004/art00011
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