The sori are arranged in one row on each side of the primary vein.
Yong-Jiang Huang, Tao Su, Zhe-Kun Zhou 2016, 'Late Pliocene diversity and distribution of Drynaria (Polypodiaceae) in western Yunnanexplained by forest vegetation and humid climates', Plant Diversityhttp://www.sciencedirect.com/science/article/pii/S2468265916300701. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
In both fern species, the diaspidids were found nearby the sori.
Marcelo Santos, Vera Regina Wolff 2015, 'Diaspididae (Hemiptera, Coccoidea) in sori of two fern species', EntomoBrasilishttp://www.periodico.ebras.bio.br/ojs/index.php/ebras/article/view/ebrasilis.v8i3.492. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)