— pando (latin for “i spread”), is a clonal colony of a single male quaking aspen determined to be a single living organism by identical genetic markers. the plant is estimated to weigh collectively 6,000,000 kg making it the heaviest known organism. the root system of pando, at an estimated 80,000 years old, is among the oldest known living organisms

quaking aspen : populus tremuloides

more : pando (tree)