Abstract

We present an analysis of relationships in Gilliesioideae (Alliaceae) based on a combined matrix of plastid rbcL, the trnL intron, the trnL-F intergenic spacer, and the rps16 intron and nuclear ITS ribosomal DNA sequences. The results are generally congruent with previous analyses, indicating two well-supported groups: Ipheion plus allied genera ("lpheieae" ined.) and Gilliesieae. They also provide higher bootstrap support for many patterns of relationships. Polyphyly of lpheion and Nothoscordum is confirmed. Increased taxon sampling (particularly in Gilliesieae) and additional molecular data would be desirable to provide further resolution and to allow an appropriate taxonomic revision to be made.

Highlights

  • Alliaceae Batsch ex Borkh. are a family of Asparagales Bromhead sensu Angiosperm Phylogeny Group (APG; 1998)

  • The trees were generally well resolved, with the only polytomy being found in one clade of four species of Nothoscordum

  • The regions of DNA used in this study were all alignable across the included taxa, but it was not possible to include Allium (Allioideae) due to a large insertion and a large deletion in the trnL-trnF intergenic spacer and markedly divergent internal transcribed spacer (ITS) sequences in Allium relative to the other taxa in Alliaceae and Agapanthus

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Summary

Introduction

Alliaceae Batsch ex Borkh. are a family of Asparagales Bromhead sensu Angiosperm Phylogeny Group (APG; 1998). Are a family of Asparagales Bromhead sensu Angiosperm Phylogeny Group (APG; 1998). 14 genera and 600 species of bulbous or rhizomatous geophytes characterized by an umbel-like inflorescence subtended by two spathe-like bracts (sometimes fused), a superior ovary, a solid style, and the frequent occurrence of alliaceous chemistry. Alliaceae are most closely related to Amaryllidaceae J. In APG II (2003) these three families were combined, with the three family names being "bracketed" under the oldest, Alliaceae. APG II permits the recognition of the smaller units; here we use Alliaceae in the narrow sense (as in APG 1998) to allow more accurate descriptions of the clades

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