''Flexanthera'' is a genus of plants in the family

Rubiaceae The Rubiaceae are a family of flowering plants, commonly known as the coffee, madder, or bedstraw family. It consists of terrestrial trees, shrubs, lianas, or herbs that are recognizable by simple, opposite leaves with interpetiolar stipules ...

.Henry Hurd Rusby. 1927. Memoirs of The New York Botanical Garden 7: 367
/ref> It contains only one known species, ''Flexanthera subcordata'',

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found els ...

to Colombia.

References

Monotypic Rubiaceae genera {{Rubiaceae-stub