Dioscoreales
Family: Burmanniaceae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Afrothismia pachyantha | Schlechter | (rediscovered) | Mt. Cameroon & Mt. Kupe, Cameroon | Rediscovered | Access | |
| Haplothismia exannulata | Airy Shaw | (rediscovered) | India | Rediscovered | Access | |
| Oxygyne triandra | Schlechter | ? | Cameroon | Extinct or extinct in the wild | Access | |
Thismia americana | N.Pfeiff., 1914 | Banded trinity | 1913 or 1916 | Illinois, USA | Missing | Access |
| Thismia caudata | Maas & H.Maas | 1892? | Brazil | Missing? | Access | |
Thismia clavigera | (Becc.) F. v. M. | (rediscovered) | Malaysia, Borneo | Rediscovered | Access | |
| Thismia fungiformis | (Taub. ex Warm.) Maas & H.Maas | ? | Brazil | Missing | Access | |
| Thismia kobensis | Suetsugu et al., 2018 | 1992 | Kobe, Hyōgo Prefecture, Honshū, Japan | Missing | Access | |
| Thismia macahensis | Taubert, 1894 | ? | Brazil | Invalid (synonym) | Access | |
| Thismia neptunis | Beccari, 1878 | (rediscovered) | Sarawak, Malaysia | Rediscovered | Access | |
| Thismia tuberculata | Hatus. | 24 September 1972 | Mount Kirishima, Kagoshima Prefecture / Miyazaki Prefecture, Kyushu, Japan | Missing | Access |
Family: Dioscoreaceae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Dioscorea buchananii undatiloba | (Baker) Wilkin, 2015 | 1921 | Limpopo and KwaZulu-Natal, South Africa | Missing | Access | |
Dioscorea elephantipes | (L'Hér.) Engl. | (rediscovered) | Northern Cape Province, South Africa | Rediscovered | Access | |
| Dioscorea inopinata | Prain & Burkill | (rediscovered) | Thailand | Rediscovered | Access | |
| Dioscorea lepcharum | Prain & Burkill | (rediscovered) | Arunachal Pradesh, India Pradesh, India | Rediscovered | Access | |
| Rajania prestoniensis | R.Knuth, 1924 | 14 November 1914 | Cuba | Missing | Access |