Species have been moved to other genera, mainly Vincetoxicum, but also Gongronema, Heterostemma, Lygisma, Sarcolobus, Secamone, Stephanotis (syn. Wattakaka), and Streptocaulon. Former species include:^[3]

T. albiflora, syn. of Vincetoxicum sublanceolatum f. albiflorum
T. aristolochioides, syn. of Vincetoxicum aristolochioides
T. barbata, syn. of Vincetoxicum barbatum
T. belostemma, syn. of Vincetoxicum belostemma
T. benthamii, syn. of Vincetoxicum polyanthum
T. caffra, syn. of Vincetoxicum caffrum
T. calcarata, syn. of Heterostemma acuminatum
T. cameroonica, syn. of Vincetoxicum cameroonicum
T. capparidifolia, syn. of Vincetoxicum capparidifolium
T. crassifolia, syn. of Vincetoxicum crassifolium
T. cuspidata, syn. of Vincetoxicum flexuosum var. flexuosum
T. hainanensis, syn. of Lygisma inflexum
T. japonica, syn. of Vincetoxicum sieboldii
T. juventas, syn. of Streptocaulon juventas
T. liebiana, syn. of Vincetoxicum liebianum
T. linearis, syn. of Vincetoxicum forsteri
T. lutescens, syn. of Vincetoxicum indicum var. indicum
T. macrantha Hance, syn. of Stephanotis volubilis
T. minutiflora Woodson, syn. of Secamone minutiflora
T. ovata, syn. of Vincetoxicum hirsutum
T. oblonga, syn. of Vincetoxicum oblongum
T. paniculata, syn. of Vincetoxicum paniculatum
T. pauciflora, syn. of Vincetoxicum bracteatum
T. rupicola, syn. of Vincetoxicum rupicola
T. samoensis, syn. of Heterostemma samoense
T. sublanceolata, syn. of Vincetoxicum sublanceolatum
T. sulphurea, syn. of Sarcolobus retusus
T. tanakae, syn. of Vincetoxicum tanakae
T. urceolata, syn. of Vincetoxicum anomalum
T. villosa Blume, syn. of Vincetoxicum villosum
T. wallichii, syn. of Gongronema wallichii
T. woollsii, syn. of Vincetoxicum woollsii

Former species

References