A Flora of the Liverworts and Hornworts of New Zealand is an illustrated guide to an important component of New Zealand’s green plant flora, to be published in four volumes.

There are now 652 species of liverworts and hornworts known from the New Zealand region (Kermadec, North, South, Stewart, Chatham, Auckland, Campbell, and Antipodes islands). Volume 1 provides keys and descriptions to 211 of the 595 liverwort species, and provides a key to all genera of the largest order, the Jungermanniales. Detailed notes are provided on distribution and habitat, and discussions under the family and genus descriptions place the New Zealand flora in the context of the world liverwort and hornwort flora. To complement the descriptions, 172 black and white plates illustrate details of many of the species and 101 color images illustrate almost all of the 60 genera in this volume. Volume 1 also includes a detailed Introduction, which presents a history of exploration of the New Zealand flora; provides a detailed overview of the region’s climate, geology, and vegetation; and includes a special contribution on endophytic fungi associates in New Zealand liverworts and their ecological and evolutionary significance.

When this four-volume flora is completed, it will be the first flora for these two groups of bryophytes since Hooker’s 1864 to 1867 Handbook of the New Zealand Flora.