Synonyms: Angadenia sylvestris; Cylicadenia harrisii; Cylicadenia harrisonii (homotypic); Dipladenia brearleyana (homotypic); Dipladenia harrisii; Dipladenia harrisonii (homotypic); Echites grandiflorus (heterotypic); Echites hoffmannseggianus; Echites insignis; Echites macranthus (heterotypic); Echites meyerianus (homotypic); Echites semidigynus (homotypic); Echites sylvestris; Haemadictyon grandiflorum; Odontadenia caudigera; Odontadenia formosa; Odontadenia grandiflora (heterotypic); Odontadenia harrisii; Odontadenia hoffmannseggiana (homotypic); Odontadenia macrantha; Odontadenia speciosa; Odontadenia sylvestris; Temnadenia semidigyna (homotypic)