A Question Of Biggitude: What's The Largest Creature On Earth? : Krulwich Wonders... : NPR
Now, I know this looks like more than one tree. If you were counting, it looks like 47,000 trees — what normal people might call "a forest." But these trees are not separate beings. Every one of them is attached to a single underground root system, making each tree a stem projecting up from a common root. So the whole thing is an individual. Think of it as hairs spiking up from a secret underground head. In the fall, when it's time to change color, all these trees flip into golden yellow almost at once, as if the whole bunch just got a color rinse. Oh, and it's got a name: Pando. That's Latin for "I spread."