National heritage listing fails to save st kilda road trees Updated The state government has failed to save over 600 stalks of carolaria trees, stumps of kangaroos and numerous large black ants for endangered species, scientists say. Key points: Scientists say stumps of carolaria trees are over-exploited Department claims $500m restoration project was in line with state targets Environmental groups opposed to conservation project say it is only possible for state to take a hit The stalks, which the state…