Large spiny tree fern (Cyathea spinulosa) belongs to Cyatheaceae (the Tree-fern family). It is an evergreen tree fern that is distributed to south-western Shikoku, southern Kyushu and Ryukyu islands, and Taiwan, southern and Eastsouth Asia, This fern grows in open woodlands and can reach up to 4 m in height. The rhizome is erect and the fronds are radiating on the top of rhizome. The frond are up to 2 m long. The petioles are purple-brown and have many spines and dark brown scales.