Takeuchi, W. (2013)

Fern distributional records in Christensenia (Marattiaceae), Dipteris (Dipteridaceae), and Rheopteris (Pteridaceae) from the upper Sepik of Papua New Guinea

. Phytotaxa 142 (1): 37–45. https://doi.org/10.11646/phytotaxa.142.1.4