Cycadophyta (Cycads)
Order: Cycadales
Family: Cycadaceae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Cycas fugax | K.D.Hill, T.H.Nguyên & P.K.Lôc, 2004 | Fugax cycad | 2004 | Phu Tho province, Viet Nam (northern) | Extinct in the wild | Access |
|
Cycas szechuanensis fairylakea
|
(D.Yue Wang) N.Liu | - | Guangdong province (eastern), China | Rediscovered | Access | |
| Cycas szechuanensis szechuanensis | C.Y.Cheng, W.C.Cheng & L.K.Fu | - | Fujian province (eastern), China | Rediscovered | Access |
Family: Zamiaceae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Ceratozamia aurantiaca | Pérez-Farr., Gut.-Ortega, J.L.Haynes & Vovides, 2021 | (rediscovered) | Oaxaca, Mexico | Rediscovered | Access | |
| Ceratozamia hildae | G.P.Landry & M.C.Wilson | Bamboo cycad | ? | Mexico | Extinct in the wild? | Access |
|
Encephalartos brevifoliolatus
|
Vorster, 1996 | Escarpment cycad, Platorand-broodboom | 2004 | near the Blyde River Canyon Nature Reserve, Limpopo Province, South Africa | Extinct in the wild | Access |
| Encephalartos cerinus | Lavranos & D.L.Goode, 1989 | pre-2000? | Buffelsrivier Valley, KwaZulu-Natal (central), South Africa | Extinct in the wild? | Access | |
|
Encephalartos heenanii |
R.A.Dyer | Heenan's cycad, Woolly cycad, siJekwane (Swati) | 2006 | eSwatini (=Swaziland) & South Africa | Extinct in the wild | Access |
| Encephalartos hirsutus | P.J.H.Hurter, 1996 | Venda cycad, Venda-broodboom | 2004 | Soutpansberg region, Limpopo Province, South Africa | Extinct in the wild | Access |
| Encephalartos inopinus | R.A.Dyer | Lydenburg cycad | 2004 | Mpumalanga Province, South Africa | Extinct in the wild? | Access |
| Encephalartos nubimontanus | P.J.H.Hurter | Blue cycad | 2001 | Mountains north of Penge, Limpopo Province, South Africa | Extinct in the wild | Access |
| Encephalartos relictus | P.J.H.Hurter, 2001 | ? | Lebombo mountains, Swaziland | Extinct in the wild | Access | |
| Encephalartos woodii | Sander, 1908 | Wood's cycad, Wood-se-broodboom | 1916 | Ngoye Forest, KwaZulu-Natal (northern), South Africa | Extinct in the wild | Access |
| Encephalartos sp. nov. 'Malawi' | - | 1941 | Miombo woodland in the vicinity of Blantyre, Malawi (southern) | Missing | Access | |
| Zamia lindleyi | Warsz. | ? | Panama | Invalid (synonym) | Access | |
| Zamia monticola | Chamb. | - | Guatemala | Rediscovered | Access |