Robuta

https://biostor.org/reference/218714 Pteridophyta of Peru, Part IV, 17. Dryopteridaceae Published in American Fern Journal, in 1991, in volume 81, pages 141 part iv peru dryopteridaceae https://phytotaxa.mapress.com/pt/article/view/phytotaxa.752.4.1 Guangxi-Yunnan 2009: Nine new cave ferns of Polystichum (Dryopteridaceae) | Phytotaxa guangxi yunnan nine new https://phytotaxa.mapress.com/pt/article/view/phytotaxa.479.1.9 Polystichum dongchuanense and P. menglaense (subg. Haplopolystichum ; Dryopteridaceae), two new... polystichum subg dryopteridaceae two new