silver tree fern: a showy tree fern of New Zealand and Australia having a crown of pinnated fronds with whitish undersides
tree fern: any of numerous usually tropical ferns having a thick woody stem or caudex and a crown of large fronds; found especially in Australia and New Zealand; chiefly of the families Cyatheaceae and Marattiaceae but some from Polypodiaceae
pipturus: an Australian genus of woody plants of the family Urticaceae