Common. Emerging from around the exposed roots of silver birch (Betula pendula) trees growing in Rotokura Lakes car park. Thallus dirty dark brown to yellow-brown (distinctly more yellow on margins and underside of thallus near gills otherwise brown), virtually immersed in ground (so appearing like an earthball / [puff ball (see images)), near roots of assumed host tree (birch). Cap up to 40 mm diameter, 'bun-shaped' with central depression scarcely evident, surface rugose. Gills white. Stalk tapering to apex, most immersed in leaf litter and soil, dirty yellow-brown, 20 mm diameter at base, narrowing to 15 mm diameter near apex Stalk and gills exuding minute droplets of milky exudate (just visible in the image showing the gills and stipe). I am assuming this is Lactarius turpis - as it is virtually identical to http://naturewatch.org.nz/observations/3001031