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(American Journal of Botany. 2003;90:1455-1462.)
© 2003 Botanical Society of America, Inc.

Systematics

Phylogenetic relationships within Colchicaceae1

Annika Vinnersten2,4 and Gail Reeves3

2Department of Systematic Botany, Evolutionary Biology Centre, Uppsala Universitet, Norbyvägen 18D, SE-752 36 Uppsala, Sweden; 3Leslie Hill Molecular Systematics Laboratory, National Botanical Institute, Kirstenbosch, Private Bag X7, Cape Town, 7735, South Africa

Three plastid regions—the rps16 intron, the atpB-rbcL intergenic spacer, and the trnL-F region—in 73 taxa representing all the genera of Colchicaceae except Kuntheria were sequenced to investigate the intrafamilial relationships of the family. In total, the three gene regions, comprising 3830 characters, were analyzed both separately and in a combined matrix. The results did not support the division of the family into two subfamilies, but they did support a core clade of mainly African genera and a grade of Australian, North American, and Asian taxa. One of the four tribes, Iphigenieae, was grossly paraphyletic, and, unexpectedly, Colchicum was nested within Androcymbium. Further, taxa of Gloriosa and Littonia were intermixed.

Key Words: atpB-rbcL spacer • Colchicaceae • phylogeny • rps16 intron • trnL-F




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