Hard shield fern Polystic à aiguillons Gelappter Schildfarn Gelappte Schëldfar Class: Pteridopsida Family: Dryopteridaceae Status LRlc – lower risk least concern Suggested citation of this webpageKrippel, Y., 2021. Polystichum aculeatum (L.) Roth. In: Online atlas of the pteridophytes of Luxembourg. URL: https://pteridophytes.lu/polystichum-aculeatum/ [21.07.2021].