Matagouri (Discaria toumatou) is New Zealand's only endemic plant with thorns, common in tussock grasslands of the South Island, particularly east of the Main Divide. In a similar way to legumes (although matagouri is not a legume) the plant forms a symbiotic relationship with nitrogen fixing bacteria, enabling it to grow in nutrient poor soils.
This example was photographed in the Sutherland Stream area of the Wither Hills Farm Park.
Location: Latitude: -41.549377 Longitude: 173.965546"
Image Date: 22/8/1970
Photographer: Christopher Cookson