Sphaeropteris australis

Sphaeropteris australis, synonyms Alsophila leichhardtiana and Cyathea leichhardtiana, the prickly tree fern, is a plant in the tree fern family, Cyatheaceae. It is native to eastern Australia (Victoria, New South Wales and Queensland). It is a common species found in moist situations, in and near rainforests. Seen between one and seven metres tall, it may be identified by the thin, prickly trunk, 5 to 15 cm wide. The sori lack true indusia, the base of the sorus bears a ring of scales. Fronds are up to 3 metres long, and the stipe is around 20 cm in length....read more on Wikipedia.