Synopsis of Grimmia Hedw. in New Zealand, including Grimmia wilsonii sp. nov.

The New Zealand Grimmia Hedw. specimens from AK, AKU, BM, CHR, OTA and WELT have been revised and a bryological field trip to the New Zealand Southern Alps was made to study specimens in their natural habitats. As a result of the revision and the field trip, G. anodon, G. austrofunalis, G. orbicularis and G. tortuosa were added to the moss flora. A key is presented, the species are briefly discussed and Grimmia wilsonii H.C. Greven sp. nov. is described and illustrated.