Key to all of the 79 species and two hybrids in the fern genus Danaea focused on identifying adult herbarium specimens.
Pictures provided by the authors and M. Kessler, R. C. Moran, J. H. Nitta, W. Testo, H. Gallifet, C. Guezennec, P. Guezennec, G. M. Moutlatlet and P. Blanc.
Venni Keskiniva and Hanna Tuomisto