A new species of Didymodon (Pottiaceae, Bryophyta) and a key to New Zealand representatives of the genus

A new species of moss, Didymodon novae-zelandiae, is described and illustrated. A key is provided to the six New Zealand species of genus Didymodon , together with the single New Zealand species of the related genus Gymnostomum . The key distinguishing features of D. novae-zelandiae are its gymnostomous capsule with a mammillate operculum, and its diminutive size. This study is a contribution to the preparation of the eFlora of New Zealand, Mosses.