Oberon is pretty awesome.

Mimosa pudica (or "sensitive plant") is one of many seismonastic plants, which react to touch. The sensitive plant's leave will curl together and droop when touched. The leaves also curl and droop in the evening, and re-open at sunrise. It's believed that these responses evolved to a.) make the plants less appealing to herbivores (droopy leaves = not good food) and b.) as a way to conserve nutrients (drooped leaves exchange less heat and water).

A person standing under an oak tree is 16 times more likely to be hit by lightning than if he had taken refuge beneath a beech tree. The oak tree has vertical roots which provide a more direct route to ground water.

Actually, Rafflesia is thought by some to be a composite of interconnected smaller flowers, which taken as a whole appears to be a single flower (similar to how a coral reef is made up of thousands of tiny organisms). It's also a parasite!