Hi Kay, I think you have a hybrid between A capillifolia and A. haastii. The terminal pinnae width is more A. haastii sized but the length of the hair tips and the untidy rounded leaf arrangement are more A. capillifolia. The terminal pinnae (leaflets) on true A. capillifolia are very fine (<0.5mm wide). The type locality is above McKinnon's Pass in Fiordland (A. cauticola is the +/- schist endemic), so near where you saw your plant. A capillifolia is usually in quite damp sites. A. haastii leaves are usually nearly flattened into a plane and it is found in shaded sites or ledges away from browsing mammals. Dawson does note two forms of A. capillifolia, but doesn't go much beyond saying one is larger, and in the field I have seen large bushy plants and small plants. Identifying Anisotome species can be difficult, and the numerous hybrids that occur make it more difficult.