Dryopteris blanfordii subsp. nigrosquamosa morphology. A Frond of mature plants B Petiole covered with scales C Petiole scale D Adaxial surface of rachis and costa E Abaxial surface of rachis and costa.

 
 
  Part of: Krinitsina AA, Belenikin MS, Churikova OA, Kuptsov SV, Antipin MI, Logacheva MD, Speranskaya AS (2017) Systematic position of Dryopteris blanfordii subsp. nigrosquamosa (Ching) Fraser-Jenkins within the genus Dryopteris Adans.. PhytoKeys 90: 89-112. https://doi.org/10.3897/phytokeys.88.14745