Oxalidales
Family: Brunelliaceae
–No subordinate taxa
Family: Cephalotaceae
–No subordinate taxa
Family: Connaraceae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Connarus beyrichii | Planch. (1850) | (rediscovered) | Brazil (southeastern) | Rediscovered | Access | |
| Connarus ecuadorensis | G.Schellenb. (1938) | (rediscovered) | Ecuador | Rediscovered | Access |
Family: Cunoniaceae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Pterophylla henricorum | (Bernardi) J.Bradford & Z.S.Rogers (2021) | 1928 | Madagascar | Missing | Access | |
| Pterophylla ysabelensis | (L.M.Perry) Pillon & H.C.Hopkins (2021) | 1932 | Ysabel Island (=Santa Isabel Island), Solomon Islands | Missing | Access | |
| Weinmannia spiraeoides | A.Gray (1854) | 1840 | Ovalau, Fiji | Extinct if valid | Access | |
|
cf. Weinmannia sp. nov. 'Mangaia' |
- | - | <2500 yrcalBP | Mangaia, Cook Islands | Extinct | Access |
Family: Elaeocarpaceae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Elaeocarpus blascoi | Weibel (1972) | Rudrakhsa tree, Blascoi('s) elaeocarpus | (rediscovered) | Tamil Nadu, Western Ghats, India | Rediscovered | Access |
|
Elaeocarpus burebidensis |
Elmer (1911) | pre-1912 | Mt. Apo, Mindanao, Philippines | Missing | Access | |
| Elaeocarpus gaussenii | Weibel (1972) | (rediscovered) | Tamil Nadu, India | Rediscovered | Access | |
| Elaeocarpus hypadenus | Miq. (1861) | 1800's | Sumatra, Indonesia | Missing | Access | |
| Elaeocarpus integripetalus | Miq. (1861) | 1800's | Sumatra, Indonesia | Missing | Access | |
| Elaeocarpus occidentalis | Tirel (1985) | 13 August 1955 | Madagascar | Missing | Access | |
| Elaeocarpus submonoceras procerus | (DC.) Weibel (1994) | 1908 | Cuernos Mountains, Philippines | Missing | Access | |
| Elaeocarpus sp. nov. 'Rapa Nui' | - | Holocene | Rapa Nui (=Easter Island) | Extinct | Access | |
|
Tetratheca deltoidea
|
Joy Thomps. (1976) | (rediscovered) | Western Australia, Australia | Rediscovered | Access | |
|
Tetratheca elliptica
|
Joy Thomps. (1976) | ? | Australia | Invalid (synonym) | Access | |
| Tetratheca fasciculata | Joy Thomps. (1976) | Cronin's tetratheca | 1895 | Wagin area, Western Australia, Australia | Missing or Extinct | Access |
| Tetratheca fordiana | R.Butcher (2005) | (rediscovered) | Western Australia, Australia | Rediscovered | Access | |
| Tetratheca gunnii | Hook.f. (1855) | Shy pinkbells, Gunns pink-bells | (rediscovered) | foothills of the Dazzler Range, near Beaconsfield, Tasmania | Rediscovered | Access |
| Tetratheca spartea | (Benth.) R.Butcher (2008) | (rediscovered) | near Toodyay, Western Australia, Australia | Rediscovered | Access |
Family: Huaceae
–No subordinate taxa
Family: Oxalidaceae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Dapania pentandra | Capuron (1965) | ? | Madagascar | Possibly Extinct in the Wild | Access | |
|
Oxalis fragilis
|
T.M.Salter (1935) | (rediscovered) | Moorreesburg, Western Cape Province, South Africa | Rediscovered | Access | |
| Oxalis hygrophila | Dreyer (2004) | 2001 | Pakhuis Pass, Western Cape Province, South Africa | Missing or Extinct | Access | |
| Oxalis involuta | T.M.Salter (1935) | 1935 | Porterville, Western Cape Province, South Africa | Missing or Extinct | Access | |
| Oxalis levis | T.M.Salter (1935) | (rediscovered) | Malmesbury, Western Cape Province, South Africa | Rediscovered | Access | |
|
Oxalis marlothii |
Schltr. ex R.Knuth (1930) | - | (rediscovered) | Northern Cape Province, South Africa | Relocated or Rediscovered | Access |
| Oxalis perineson | T.M.Salter & Exell (1930) | 1932-1935 | Moorreesburg, Western Cape Province, South Africa | Missing or Extinct | Access | |
| Oxalis pseudo-hirta | T.M.Salter (1944) | 1930 | Du Toit's Kloof to Robertson, Western Cape Province, South Africa | Missing or Extinct | Access | |
| Oxalis purpurata | Jacq. (1798) | (rediscovered) | Bokkeveld Escarpment near Nieuwoudtville, Northern Cape Province, South Africa | Rediscovered | Access | |
| Oxalis variifolia | Steud. (1841) | (rediscovered) | Northern Swartland, Western Cape Province, South Africa | Rediscovered | Access |
Appendix 1: Possible additions to the list above