Fishbone fern - Nephrolepis cordifolia

''Nephrolepis cordifolia'', is a fern native to northern Australia and Asia. It has many common names including fishbone fern,tuberous sword fern,tuber ladder fern, erect sword fern, narrow sword fern and ladder fern, and herringbone fern. It is indigenous to the Hawaiian Islands where it is known as ''kupukupu'', ''okupukupu'' or ''ni'ani'au'' It is similar to the related fern ''Nephrolepis exaltata''.