The systematic position of Dryopteris blanfordii subsp. nigrosquamosa (Ching) Fraser-Jenkins within the genus Dryopteris Adans

(C.Hope) C.Chr. is a member of the Dryopteridaceae, growing in high altitude or forests (2900-3500 m) in China and India. Phylogenetic relationships between D. blanfordii subsp. nigrosquamosa and closely related species of were investigated using a combined analysis of multiple molecular data sets (the protein-coding region of and genes and intergenic spacers , , , and ). An assumption about the position of D. blanfordii subsp. nigrosquamosa within was made by using the Maximum Likelihood and Bayesian Inference approach and chloroplast marker sequences of species from GenBank. The results demonstrated that Asian taxa D. blanfordii subsp. nigrosquamosa and as well as two American species and belong to the same clade, all four of them being part of Dryopteris section Dryopteris.