Lycopodiophyta (Clubmosses, Firmosses and Quillworts)
Order: Isoetales
Family: Isoetaceae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Isoetes amazonica | A. Braun | (rediscovered) | Brazil | Rediscovered | Access | |
| Isoetes bradei | Herter | (rediscovered) | Brazil | Rediscovered | Access | |
|
Isoetes dixitii
|
Shende. | (rediscovered) | Western Ghats, India | Rediscovered | Access | |
| Isoetes gardneriana | Kunze ex Mett. (1869) | (rediscovered) | Brazil | Rediscovered | Access | |
| Isoetes haussknechtii | Troìa & Greuter (2015) | (rediscovered) | Greece | Rediscovered | Access | |
| Isoetes heldreichii | Wettst. (1886) | Pindus quillwort | 1885 | Pindos Mountains, Greece | Missing | Access |
|
Isoetes louisianensis |
Thieret | Louisiana quillwort | (rediscovered) | Louisiana & Mississippi, USA | Rediscovered | Access |
| Isoetes philippinensis | Merr. & L.M. Perry | (rediscovered) | Philippines | Rediscovered | Access | |
| Isoetes sampathkumarnii | L.N.Rao | ? | Karnataka, India | Invalid (synonym) | Access | |
| Isoetes sinensis | Palmer | ? | China | Missing | Access |
Order: Lycopodiales
Family: Lycopodiaceae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Huperzia rubra | (Cham. & Schltdl.) Trevis. | (rediscovered) | Minas Gerais state, Brazil | Rediscovered | Access | |
| Lycopodium cunninghamiodes | Baker (Hayata?) | 3 April 1966 | Amami Ōshima, Amami Islands, Satsunan Islands, Ryukyu Archipelago, Japan | Extinct in the wild? | Access |
Order: Selaginellales
Family: Selaginellaceae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Selaginella orizabensis | Hieron. | ? | Veracruz, Mexico | Extinct | Access |