Pando (Q921090) 
extremely old, large tree; a clonal colony forming one interconnected root system 
Also known as:
- The Trembling Giant
Asexual or vegetative reproduction from root systems offers many benefits including phenomenal longevity. Aspen "clones," as the individual root systems are called, can live to be thousands of years old. The oldest known clone in existence is called "Pando" and is located in the Fishlake National Forest north of Bryce Canyon National Park in central Utah. It has been aged at 80,000 years!