Dioscorea collettii var. hypoglauca Dioscorea collettii var. collettii Dioscorea collettii var. hypoglauca Dioscorea collettii var. izuensis
Dioscorea gracillima var. collettii Dioscorea gracillima var. collettii
Taxonomic data from World Flora Online, accessed June 20, 2024