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  Plantae
      Charophyta
        Streptophytina
            Equisetopsida
              Magnoliidae
                    Dioscoreales
                            Dioscoreaceae
                                   [Taccaceae]
                                     Dioscorea
                                             Dioscorea acanthogene
                                                   [Dioscorea guanaiensis]
                                             Dioscorea alata
                                             Dioscorea altissima
                                             Dioscorea amaranthoides
                                                   [Dioscorea amaranthoides var. paniculata]
                                             Dioscorea bulbifera
                                             Dioscorea caucensis
                                             Dioscorea composita
                                             Dioscorea convolvulacea
                                             Dioscorea coriacea
                                                   [Dioscorea pennellii var. pilosula]
                                             Dioscorea cuspidata
                                             Dioscorea cyphocarpa
                                             Dioscorea deltoidea
                                             Dioscorea dugesii
                                             Dioscorea elegantula
                                             Dioscorea floridana
                                             Dioscorea galeottiana
                                             Dioscorea glabra
                                             Dioscorea glandulosa
                                               Dioscorea glandulosa var. glandulosa
                                                     [Dioscorea recurva]
                                             Dioscorea grandiflora
                                             Dioscorea hastatissima
                                             Dioscorea herbert-smithii
                                             Dioscorea hirsuta
                                               Dioscorea hirsuta var. glabra
                                             Dioscorea hirsuticaulis
                                             Dioscorea humilis
                                               Dioscorea humilis subsp. humilis
                                                     [Dioscorea pusilla]
                                             Dioscorea insignis
                                             Dioscorea jaliscana
                                             Dioscorea killipii
                                             Dioscorea linearis
                                             Dioscorea lobata
                                               Dioscorea lobata var. morelosana
                                             Dioscorea martensis
                                             Dioscorea meridensis
                                             Dioscorea mexicana
                                                   [Dioscorea anconensis]
                                             Dioscorea militaris
                                             Dioscorea minima
                                             Dioscorea minutiflora
                                             Dioscorea monadelpha
                                                   [Dioscorea lagoa-santa]
                                             Dioscorea multinervis
                                             Dioscorea nervata
                                             Dioscorea oppositifolia
                                                   [Dioscorea batatas]
                                             Dioscorea pedicellata
                                             Dioscorea pennellii
                                             Dioscorea pilosiuscula
                                                   [Dioscorea lanosa]
                                             Dioscorea piperifolia
                                                   [Dioscorea arcuata]
                                             Dioscorea platycolpota
                                             Dioscorea plumifera
                                             Dioscorea polygonoides
                                             Dioscorea pringlei
                                             Dioscorea pyranaica
                                             Dioscorea quartiniana
                                                   [Dioscorea crinita]
                                             Dioscorea quaternata
                                                   [Dioscorea glauca]
                                               Dioscorea quaternata var. glauca
                                             Dioscorea remotiflora
                                                   [Dioscorea remotiflora var. maculata]
                                                   [Dioscorea remotiflora var. palmeri]
                                             Dioscorea rusbyi
                                             Dioscorea sansibarensis
                                             Dioscorea sapindoides
                                             Dioscorea tamoidea
                                             Dioscorea trifida
                                                   [Dioscorea angustifolia]
                                             Dioscorea truncata
                                             Dioscorea ulinei
                                             Dioscorea urceolata
                                               Dioscorea urceolata var. reflexa
                                             Dioscorea uruapanensis
                                             Dioscorea villosa
                                                   [Dioscorea hirticaulis]
                                                   [Dioscorea paniculata]
                                               Dioscorea villosa var. floridana
                                               Dioscorea villosa var. glabrifolia
                                               Dioscorea villosa var. hirticaulis
                                             Dioscorea yucatanensis
                                     Rajania
                                             Rajania angustifolia
                                             Rajania cubensis
                                             Rajania hastata
                                             Rajania mucronata
                                     Tamus
                                             Tamus communis
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