Didymochlaena is a genus of ferns. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), it is the only genus in the family Didymochlaenaceae. Alternatively, the family may be placed in a very broadly defined family Polypodiaceae sensu lato as the subfamily Didymochlaenoideae.

 Members of this genus are terrestrial, evergreen plants growing tall. The fronds arise from upright, scaly rhizomes. The leaves are bipinnate and imparipinnate.

Phylogeny: This genus includes the following species:

External phylogeny from PPG I 2016	Internal phylogeny from Fern Tree of Life
		label1=Didymochlaena	1=Read more Source: Wikipedia, article Didymochlaena truncatula. Content adapted from Wikipedia, available under the CC BY-SA 4.0 license. Accessed on 17/07/2026. Geographic distribution Loading map... ✖ • 1 record - • 2 or 3 records - • 4 to 10 records - • 11 to 50 records - • Over 51 records Species photographs Last published photographs Photography ID: 542699  Ruta 15 Misiones Argentina 07/23/2023 Marcos Augusto Lartigau  View all photographs of the species  Add a photography of this species Species vocalizations Last vocalizations published  Add an audio of this species Species videos Last filmings published  Add a film of this species Species reports  Detail of places sorted by number of records Page 1 Record ID Date Exact time Country Province / department Place Filmed Photographed Recorded vocal Observed Heard Wounded or dead Number of individuals User or Bibliography Detail 1799750 23/07/2023 Argentina Misiones Entre Reserva Guaraní y Caá Yarí, Ruta 15 Marcos Augusto Lartigau Page 1  Add a record of this species 📖 Recommended citation Please use the following reference when citing this species account. EcoRegistros. 2026. Didymochlaena truncatula – Species account. Accessed from www.ecoregistros.org on 23/09/2026.