Pellaea Rotundifolia, commonly known as button fern, is a popular ornamental plant that is native to New Zealand. It is a small plant with round fronds that grow in a tight rosette pattern. Synonyms for Pellaea Rotundifolia include Roundleaf Fern, Lemon Button Fern, and Small Button Fern. These names describe the distinctive round shape of the fronds and the lemony fragrance that the plant emits when touched. Button fern is a beautiful addition to any garden or indoor space, as it requires minimal care and produces elegant greenery that will brighten up any room.