Lu, N.T., Zhang, L., Thanh, N.T., Toan, L.C. & Zhang, L.-B. (2023) Three new species and one new record of the fern genus Polystichum (Dryopteridaceae) from Vietnam. Phytotaxa 607 (1): 85–94. https://doi.org/10.11646/phytotaxa.607.1.7