Gymnocarpium robertianum is a species of fern that is also known as the limestone oak fern. The plant is mainly found in Europe, Asia, and North America. The fern is characterized by its green, feathery fronds that grow in a circular pattern. The scientific name is suggestive of its spore-bearing habit; "gymnos" meaning naked and "karpos" meaning fruit. There are no known common or colloquial synonyms for Gymnocarpium robertianum, although it is sometimes referred to by its scientific name. This delicate fern is a popular choice for landscaping projects and can be found in gardens, parks, and natural areas.