Abstract
Five lectotypes are chosen for basionyms relevant to New Zealand representatives of the fern families Cyatheaceae and Loxsomataceae: Alsophila colensoi Hook.f., Cyathea kermadecensis W.R.B.Oliv., C. smithii Hook.f., C. tricolor Colenso and Hemitelia microphylla Colenso. Additional syntypes are identified for Loxsoma cunninghamii R.Br. ex A.Cunn. No original material of Cyathea medullaris var. integra Hook. has been located and the type is left undesignated. This article is a contribution towards clarifying the taxonomic and nomenclatural status of New Zealand plants for the plant names database (Ngā Tipu Aotearoa) and the electronic Flora of New Zealand.