Miao, X.-Y., Li, C.-X., & Zhang, L.-B. (2017).

Polystichum duyunense (subg. Haplopolystichum; Dryopteridaceae), a new cave fern from Guizhou, China

. Phytotaxa, 292(3), 296–300. https://doi.org/10.11646/phytotaxa.292.3.10