Zhang, L.-B., Duan, Y.-F. & Kropf, M. (2019)

Eight new species of the fern genus Polystichum (subg. Haplopolystichum; Dryopteridaceae) from limestone caves in Guizhou, China

. Phytotaxa 404 (6): 209–230. https://doi.org/10.11646/phytotaxa.404.6.1