Piperales
Family: Aristolochiaceae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Thottea dalzellii | (Hook.f.) Karthik. & Moorthy | - | Southern Western Ghats, India | Rediscovered | Access |
Family: Piperaceae (Peppers)
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
|
Peperomia aphanoneura
|
C.DC., 1898 | between 1898 and 1901 | near Santo Domingo, Pichincha province, Ecuador | Invalid (synonym) | Access | |
| Peperomia balfourii | C.DC. | ? | Rodrigues, Mascarene Islands | Extinct | Access | |
| Peperomia beckeri | E.F.Guim. & R.J.V.Alves | ? | Brazil | Extinct | Access | |
| Peperomia buxifolia | Sodiro | 100+ years ago | the western slopes of Volcán Pichincha, Ecuador | Missing | Access | |
| Peperomia carpinterana | C.DC. | (rediscovered?) | Costa Rica, Guatemala & Mexico | Rediscovered? | Access | |
| Peperomia cordilimba | C.DC. | ? | close to Perucho, Pichincha province, Ecuador | Missing | Access | |
| Peperomia crypticola | C.DC. | - | Minas Gerais (eastern) & Rio de Janeiro (western), Brazil | Rediscovered | Access | |
|
Peperomia dauleana
|
C.DC. | 1800's | Ecuador | Missing | Access | |
| Peperomia degeneri | Yunck. | 1928 | Molokai, Hawaiian Islands, USA | Missing | Access | |
| Peperomia discifolia | Sodiro | 1900 | the slopes of Volcán Pichincha, Ecuador | Missing | Access | |
| Peperomia glandulosa | C.DC. | 100+ years ago | near Loja, Ecuador | Missing | Access | |
| Peperomia guayaquilensis | (Miq.) C.DC. | ? | around Guayaquil, Guayas province, Ecuador | Missing | Access | |
| Peperomia hirta | C.DC. | ? | Rodrigues, Mascarene Islands | Missing | Access | |
| Peperomia involucrata | Sodiro | ? | Pichincha Province, Ecuador | Missing | Access | |
| Peperomia leucorrhachis | Sodiro ex C.DC. | 100+ years ago | Ecuador | Missing | Access | |
| Peperomia litana | Trel. & Yunck. | 1901 | Río Lita, Esmeraldas province, Ecuador | Missing | Access | |
| Peperomia megalopoda | Trel. | ? | Puerto Rico | Extinct | Access | |
| Peperomia micromerioides | Sodiro | 100+ years ago | Cerro Atacazo, Pichincha province, Ecuador | Missing | Access | |
| Peperomia mitchelioides | Sodiro | 100+ years ago | Napo province, Ecuador | Missing | Access | |
| Peperomia parvilimba | C.DC. | early 1900's | along the Río Santiago, Esmeraldas province, Ecuador | Missing | Access | |
| Peperomia peploides | Kunth. | early 1800's | Pichincha Province, Ecuador | Missing | Access | |
| Peperomia petraea | C.DC. | 1800's | Ecuador | Missing | Access | |
| Peperomia pichinchae | C.DC. | 100+ years ago | Pichincha Province, Ecuador | Missing | Access | |
| Peperomia plinervata | H.St.John | ? | Hawaiian Islands, USA | Invalid (synonym) | Access | |
| Peperomia pululaguana | C.DC. | 145+ years ago | the slopes of Volcán Pululahua, Pichincha province, Ecuador | Missing | Access | |
| Peperomia rodriguesiana | Balf.f. | ? | Rodrigues, Mascarene Islands | Missing | Access | |
| Peperomia rossii | Rendle ex E. G. Baker | 1898 | Christmas Island, Indian Ocean | Extinct | Access | |
| Peperomia stenostachya | C.DC. | 100+ years ago | the western slopes of Volcán Pichincha, Ecuador | Missing | Access | |
| Peperomia subpetiolata | Yunck. | c.2000 | Maui, Hawaiian Islands, USA | Missing | Access | |
| Peperomia tablahuasiana | C.DC. | 100+ years ago | Pichincha Province, Ecuador | Missing | Access | |
|
Piper collinum
|
C.DC. | ? | Malaysia | Missing | Access | |
| Piper molliusculum | Sodiro | 100+years ago | Puente de Chimbo, Guayas Province, Ecuador | Missing | Access |
Family: Saururaceae
–No subordinate taxa