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. This volume mainly deals with one important family in the New Zealand liverwort flora: the Lophocoleaceae. In addition it covers two small families: Geocalycaceae and Brevianthaceae. Detailed notes are provided on distribution and habitat, and discussions under family and genus descriptions place the New Zealand and Tasmanian flora in the context of the world liverwort and hornwort flora. To complement the descriptions, 220 black-and-white plates illustrate the species, and 59 color images illustrate all but one of the 15 genera in this volume. The bibliography updates that published in Volume 1 in 2008. When this four-volume flora is completed, it will be the first flora for these two groups of bryophytes since Hooker's 1864–1867 Handbook of the New Zealand Flora.