Fagales
Family: Betulaceae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Alnus henryi | C.K.Schneid. | 1916 | Tanshui region, Taiwan | Missing | Access | |
| Betula gynoterminalis | Y.C.Hsu & C.J.Wang | 1956 | Drungzu Nusu Zizhixian, Yunnan Province, China | Missing | Access | |
| Betula halophila | Ching ex P.C. Li | ? | China | Rediscovered? | Access | |
| Betula jinpingensis | P.C.Li | ? | China | Invalid (synonym) | Access | |
| Betula lenta uber | (Ashe) McAll. & Ashburner | Virginia round-leaf birch | (rediscovered) | Virginia, USA | Rediscovered | Access |
| Betula szaferi | Jent.-Szaf. ex Stasz. | Szaferí birch | ? | Poland | Extinct in the wild? | Access |
| Carpinus sp. nov. 'Tenerife' | - | c.1400's | Tenerife, Canary Islands, North Africa | Extinct | Access |
Family: Casuarinaceae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
|
Allocasuarina fibrosa |
(C.A.Gardner) L.A.S.Johnson | Woolly sheoak | (rediscovered) | central Wheatbelt, Western Australia, Australia | Rediscovered | Access |
|
Allocasuarina portuensis
|
L.A.S.Johnson | Nielsen Park she-oak | ? | Sydney, New South Wales, Australia | Extinct in the wild | Access |
Family: Fagaceae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Castanea ozarkensis | Ashe | Ozark chinkapin | (rediscovered) | Arkansis, Missouri & Oklahoma, USA | Rediscovered | Access |
|
Fagus chienii |
W.C.Cheng | 1935 | Pingwu County, Sichuan Province, China | Invalid (synonym) | Access | |
| Lithocarpus kostermansii | Soepadmo | (rediscovered) | Java, Indonesia | Rediscovered | Access | |
|
Quercus albicaulis
|
Chun & W.C.Ko | ? | Hainan Province, China | Missing | Access | |
| Quercus argyrotricha | A.Camus | ? | China | Extinct in the wild? | Access | |
| Quercus dankiaensis | A.Camus | 1934 | Vietnam | Missing | Access | |
| Quercus dinghuensis | C.C.Huang | 1931 | China | Missing | Access | |
| Quercus marlipoensis | Hu & W.C.Cheng | ? | Yunnan Province, China | Missing | Access | |
| Quercus motuoensis | C.C.Huang | 1983 | China | Missing | Access | |
| Quercus mulleri | Martínez | 1953 | Oaxaca, México | Missing | Access | |
| Quercus pinbianensis | (Y.C.Hsu & H.Wei Jen) C.C.Huang & Y.T.Chang | 1953 | China | Missing | Access | |
| Quercus pseudoverticillata | Soepadmo | 1972 | Malaysia | Missing | Access | |
| Quercus semiserratoides | (Y.C.Hsu & H.Wei Jen) C.C.Huang & Y.T.Chang | 1992 | China | Possibly extinct in the wild | Access | |
| Quercus tardifolia | C.H. Mull. | Chisos Mountains oak, lateleaf oak | (rediscovered) | Mexico & Texas, USA | Rediscovered | Access |
| Quercus tonduzii | Seemen | 1896 or later | Costa Rica (central) | Missing | Access |
Family: Juglandaceae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
|
Carya poilanei |
(A.Chev.) J.-F.Leroy | (rediscovered) | China, Laos, Thailand & Vietnam | Rediscovered | Access | |
| Oreomunnea pterocarpa | Oerst. | Gavilán, Gavilán Blanco | (rediscovered) | Costa Rica, Mexico & Panama | Rediscovered | Access |
Family: Myricaceae
–No subordinate taxa
Family: Nothofagaceae
–No subordinate taxa
Family: Ticodendraceae
–No subordinate taxa