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 deals with four large families in the New Zealand flora which are not only prominent on the forest floor of New Zealand in high rainfall areas, but are the most robust of the terrestrial species: Plagiochilaceae, Acrobolbaceae, Schistochilaceae, and Balantiopsidaceae. In addition it deals with six smaller families: Mastigophoraceae, Ptilidiaceae, Chaetophyllopsidaceae, Herzogianthaceae, Jubulopsidaceae, and Lepidolaenaceae. 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, 167 black-and-white plates illustrate the species, and 121 colour images illustrate all 25 genera dealt with in this volume. 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.