|A resurrection plant (Selaginella lepidophylla). There are many other resurrection plants in the same genus.|
|A time-lapse of the rehydration process|
When dry, the plant isn't actually as dead as it appears, but in fact retains what moisture it can and shuts down all but the basic functions it needs to stay alive. This unique characteristic is such a novelty that it is commonly sold to tourists who marvel at its rehydration abilities. It is native to the Southern United States from Arizona to Texas to the area South all the way to El Salvador. However, there are many more resurrection plants than just this one species, with over seven hundred species being in the same genus.
Source is Union County College. Images are from Wikimedia Commons under Creative Commons licenses: one, two.