Phylum: Anthocerotophyta (Hornworts)
The taxonomy presented here follows the World Flora Online's WFO Plant List as at mid-August 2026. As of early 2026, there does not appear to be any reported case of the global rediscovery of a hornwort in the peer-reviewed literature (Santana de Lima, 2026).
Reference:
Santana de Lima, Isabele Souza. (2026). The world’s rediscovered mosses / Världens återupptäckta mossor. Bachelor's thesis, Department of Environmental and Life Sciences, Karlstad University. 15 pp.
Class: Anthocerotopsida
Subclass: Anthocerotidae
Order: Anthocerotales
Family: Anthocerotaceae
—No subordinate taxa
Subclass: Dendrocerotidae
Order: Dendrocerotales
Family: Dendrocerotaceae
| Scientific Name & Authority | Common Name/s | Distribution (Habitat) | Status (Last Record) | Taxon Profile |
| Dendroceros exalatus Steph. (1909) | - | southern Brazil | Extinct (<1870) | Access |
Order: Phymatocerotales
Family: Phymatocerotaceae
—No subordinate taxa
Subclass: Notothyladidae
Order: Notothyladales
Family: Notothyladaceae
—No subordinate taxa
Class: Leiosporocerotopsida [1 species: Leiosporoceros dussii]
Order: Leiosporocerotales
Family: Leiosporocerotaceae
—No subordinate taxa
Statistics
| Conservation status | Number of taxa (in percentage) |
| Erroneously listed | 0 |
| Extinct | 1 (100%) |
| Missing | 0 |
| Extinct in the Wild | 0 |
| Possibly Extinct in the Wild | 0 |
| Globally Rediscovered | 0 |
| Rediscovered in the Wild | 0 |
| Reintroduced | 0 |
| Uncertain status | 0 |
| Hypothetical | 0 |
| Total | 1 (100%) |
| Invalid | 0 |
| Grand total | 1 |