Molecular data support the inclusion of Duckeodendron cestroides in Solanaceae

Duckeodendron cestroides is the sole species in Duckeodendraceae and has also been included in Solanaceae. Boraginaceae and Apocynaceae. Analysis of rbcL sequence data indicates a placement within Solanaceae, within which Duckeodendron appears to be an isolated taxon, falling in a paraphyletic grade that also includes Goetzea, Metternichia, Schizanthus, Schwenckia and Salpiglossis. The molecular results are discussed in the light of the morphological and anatomical characters of Duckeodendron and other Solanaceae.