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, northern Viet Nam | Extinct in the wild | Access |
|
Cycas szechuanensis fairylakea
|
(D.Yue Wang) N.Liu (2004) | feng-wei su-tie, nanpan jiang su-tie, sichuan su-tie | (rediscovered) | eastern Guangdong province, China | Invalid (synonym) | Access |
| Cycas szechuanensis | C.Y.Cheng, W.C.Cheng & L.K.Fu (1975) | sichuan su-tie, nanpan jiang su-tie, sichuan su-tie | (rediscovered) | eastern Guangdong province and eastern Fujian province, China | Rediscovered in the wild | 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 in the wild | Access |
| Ceratozamia hildae | G.P.Landry & M.C.Wilson (1979) | Bamboo cycad | (rediscovered) | Querétaro & San Luis Potosí, Mexico | Rediscovered in the wild | Access |
|
Ceratozamia kuesteriana |
Regel (1857) | - | (rediscovered) | southern Tamaulipas, Mexico | Rediscovered in the wild | Access |
|
Ceratozamia martinezii |
Mart.-Domínguez, Nic.-Mor. & D.W.Stev. (2021) | - | (rediscovered) | Oaxaca, Mexico | Invalid (synonym) | 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) | Waxen cycad | pre-2000 | Buffelsrivier Valley, KwaZulu-Natal (central), South Africa | Possibly extinct in the wild | Access |
|
Encephalartos heenanii |
R.A.Dyer (1972) | 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 | Possibly extinct in the wild | Access |
| Encephalartos inopinus | R.A.Dyer (1964) | Lydenburg cycad | 2004 | Mpumalanga Province, South Africa | Possibly extinct in the wild | Access |
| Encephalartos nubimontanus | P.J.H.Hurter (1995) | Blue cycad | 2001 | Mountains north of Penge, Limpopo Province, South Africa | Extinct in the wild | Access |
| Encephalartos relictus | P.J.H.Hurter (2001) | Relict cycad | 1971 | Lebombo mountains, eSwatini (=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' | - | - | 10 October 1941 | Miombo woodland in the vicinity of Blantyre, Malawi (southern) | Missing | Access |
| Zamia lindleyi | Warsz. ex A.Dietr. (1851) | - | (rediscovered) | Chiriqui, Panamá | Rediscovered | Access |
| Zamia monticola | Chamb. (1926) | - | (rediscovered) | Alta Verapaz province, Guatemala | Rediscovered (in the wild?) | Access |