Mazus novaezeelandiae subsp. impolitus f. impolitus
Vascular – Native
Herbs - Dicotyledons other than Composites
2n = 38
Current conservation status
The conservation status of all known New Zealand vascular plant taxa at the rank of species and below were reassessed in 2017 using the New Zealand Threat Classification System (NZTCS). This report includes a statistical summary and brief notes on changes since 2012 and replaces all previous NZTCS lists for vascular plants. Authors: By Peter J. de Lange, Jeremy R. Rolfe, John W. Barkla, Shannel P. Courtney, Paul D. Champion, Leon R. Perrie, Sarah M. Beadel, Kerry A. Ford, Ilse Breitwieser, Ines Schönberger, Rowan Hindmarsh-Walls, Peter B. Heenan and Kate Ladley.
2018 | Threatened – Nationally Endangered
Previous conservation statuses
2012 | Threatened – Nationally Vulnerable | Qualifiers: DP
2009 | Threatened – Nationally Vulnerable | Qualifiers: DP
2004 | Serious Decline
Endemic to New Zealand. North and South Island, Marlborough, Canterbury and Otago.
M. novaezeelandiae subsp. impolitus prefers coastal sites, particularly damp hollows and sand flats, amongst sandy turf and coastal pasture species; but has also been found inland on river gravels in Otago. Swamp and stream margins, soggy groung, river flats beneath tawa and kahikatea.
A perennial, creeping herb forming compact, leafy rosettes, leaves spoon-shaped, dark green to yellow-green 20–75 mm long. The margins of the leaves may be pigmented brown. The erect inflorescence is often held well above the foliage and may bear from 1 to 5 Mimulus-like flowers, these are white with a yellow throat. It is distinguished from subsp. novaezeelandiae by its dull green leaves that are hairless or only sparsely hairy.
Mazus pumilio which has blue or lilac flowers and a finely toothed leaf margin. This predominantly Australian species is known in New Zealand from only one site in Northland, but is now sold by many garden centres as M. novazeelandiae.
Flowering occurs in November.
Fruiting capsules are found from December to April.
Very susceptible to disturbance, habitat clearance and modification including stock trampling.
mazus: Tear (after protuberance on throat of flower)
novaezeelandiae: Of New Zealand
impolitus: Unpolished, matt
Where To Buy
Fact Sheet prepared for NZPCN by P.J. de Lange (30 August 2003). For more information see Heenan (1998)
References and further reading
Heenan, P. B. 1998: Mazus novaezeelandiae (Scrophulariaceae): taxonomy, distribution, habitats, and conservation. New Zealand Journal of Botany 36(3): 407-416.
NZPCN Fact Sheet citation
Please cite as: de Lange, P.J. (Year at time of access): Mazus novaezeelandiae subsp. impolitus f. impolitus Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/mazus-novaezeelandiae-subsp-impolitus-f-impolitus/ (Date website was queried)