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