Polystichum lonchitis, also known as Holly fern, is a type of fern that has unique features that set it apart from others. It has a hardy texture that makes it ideal for use in outdoor gardens. If you are looking for synonyms to describe this beautiful fern, some of the top options include Hard shield fern, Spiny leaved fern, and Sword fern. Other synonyms that are commonly used include Sword holly fern, Spearpoint holly fern, and Christmas fern because of its seasonal appearance. Whatever the name you choose, the Polystichum lonchitis remains a beautiful addition to any outdoor garden setting.