napiform
A long swollen but tapering root – like a parsnip, or carrot.
native
Naturally occurring in New Zealand (i.e., not introduced accidentally or deliberately by humans).
nerves
Strands of conducting and usually strengthening tissue in a leaves or similar structures.
naturalised
Referring to plants that have escaped from cultivation (including gardens or forest plantations) and can now reproduce in the wild (without human assistance).
nival
Growing at high altitudes. From Latin: nivalis, snowy etc. from nix, nivis, snow.