Names for five species of Orchidaceae from New Zealand described by Joseph Dalton Hooker and William Colenso are typified. This includes lectotypes for Nematoceras trilobus Hook.f. (the basionym of Corybas trilobus (Hook.f.) Rchb.f.), Thelymitra nemoralis Colenso, Thelymitra nervosa Colenso, and Thelymitra purpureofusca Colenso. We also report finding the holotype of Thelymitra concinna Colenso at WELT and discuss synonymization of T. decora Cheeseman with T. nervosa .
Jones et al. (Thu,) studied this question.