Mazus novaezeelandiae(Scrophulariaceae): Taxonomy, distribution, habitats, and conservation

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Abstract
Mazus novaezeelandiae subsp. impolitus is a new subspecies distinguished from M. novaezeelandiae subsp. novaezeelandiae by dull or matt leaves with a prominent brown margin. It occurs on alluvial and sand soils. A form with distinct hairy margins and a restricted distribution is described as M. novaezeelandiae subsp. impolitus f. hirtus. Mazus novaezeelandiae subsp. novaezeelandiae has shiny leaves and is associated with lowland kahikatea‐hardwood forest, or the sites of former kahikatea forest, and is known from few locations. The distribution, habitats, reproductive biology, and conservation status of the taxa are assessed, and a key is provided to the species of Mazus in New Zealand.