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Li X juan, Li J xiu, Sun K, Wang X. Taxonomic Validity of Dryopteris Laoshanensis J. X. LI ET S. T. Ma and Dryopteris Championii (Benth.) C. Chr. From China. Bangladesh J. Bot. [Internet]. 2023 Jan. 18 [cited 2024 May 26];51(40):863-71. Available from: https://www.banglajol.info/index.php/BJB/article/view/63828