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Charophyta > Streptophytina > Plantae (land plants)
> Tracheophyta (vascular plants) > Euphyllophyta > Lignophyta (woody plants)
> Spermatophyta (seed plants) > Angiospermae (flowering
Three of the five families are encountered in southern Africa,
Dioscoreaceae (yam family), being by far the largest. Worldwide there
are about 21 genera and 1037 species, of which three genera and
(mainly Dioscorea) are native to southern Africa. In
addition one species in the genus Tacca is cultivated in the
Families encountered in southern Africa
Contains the single genus Tacca with about 12 species worldwide.
(Tahiti arrowroot) is native to southern Africa (recorded from Zimbabwe),
and Tacca chantrieri (native to India and SE Asia) is cultivated in the region.
Nine genera and 95 species worldwide (mainly tropical regions). There is one species, Burmannia
madagascariensis, that is native to southern Africa.
Dioscoreaceae (yam family)
About 870 species in four genera, occurring worldwide in warm
regions. Dioscorea (yams)
is the only genus occurring in southern Africa, with 23 species native to this
Families not encountered in southern Africa