Abstract
In a study designed to elucidate the taxonomy of Solanum incanum sensu lato, S. incanum L., S. campylacanthum Hochst. ex A. Rich., S. panduriforme E. Mey. ex Dunal and S. lichtensteinii Willd. from Africa and SW Asia were investigated using crossability and morphometric techniques. It is proposed that S. panduriforme is, in fact, a subspecies of S. campylacanthum (S. campylacanthum subsp. panduriforme) and that S. incanum and S. lichtensteinii are distinct species. Other information suggests that S. campylacanthum is more closely related to a common ancestor of S. incanum s.l. S. campylacanthum subsp. panduriforme and S. incanum are believed to have diverged away from S. campylacanthum-type predecessors in tropical E Africa, moving southwards or towards the Middle East, respectively. S. lichtensteinii probably evolved from an even earlier ancestor in its migration towards southern Africa.
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