Term: thyrsopteris: a terrestrial tree fern of South America
Broader: 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 | Unrelated: nauruan: a native or inhabitant of Nauru