CLACS affiliate Professor James Dalling (Plant Biology, University of Illinois) and his team discovered that a species of tree fern exclusive to Panama "reanimates its own dead leaf fronds, converting them into root structures that feed the mother plant", as reported by UIUC's News Bureau. The "zombie leaves" are then reconfigured, reversing the flow of water to draw nutrients back into the plant.

You can read the paper “Zombie leaves: novel repurposing of senescent fronds in the tree fern Cyathea rojasiana in a tropical montane forest” in the journal Ecology.