Dagger fern, also known as the Japanese shield fern or the East Indian holly fern, is a show-stopping plant that can add some serious texture and dimension to any garden. Although its common name may be well-known, there are plenty of other synonyms for this striking fern. Some of the alternative names include the Holly Leaf Fern, Aspidium heterophyllum, Aspidium munitum, and the sword fern, to name a few. Regardless of what you choose to call it, the dagger fern is sure to impress with its dark green foliage, strikingly glossy appearance, and unique shape. It is a popular choice for adding some tropical flair to gardens, both indoors and outdoors.