High Quality Content by WIKIPEDIA articles! Nertera depressa is a species of flowering plant in the family Rubiaceae. This species was first collected on Tristan da Cunha and Inaccessible Island, but has been found to be distributed in at broader distances from its original discovery such as New Zealand. An example plant associate of N. depressa is the Westland podocarp/broadleaf forests of New Zealand where example understory associates of Libertia pulchella, Quintinia acutifolia, Rubus cissoides and Blechnum discolor are found.