title: P. rex
text: # P. rex
  
  P. rex may refer to:
  
  * Papilio rex, the regal swallowtail, a butterfly species found in Africa
  * Pedicularis rex, a plant related to lousewort
  * Percina rex, the Roanoke logperch, a small freshwater fish species found in the Roanoke and Chowan drainages
  * Pseudoeurycea rex, a salamander species found mostly in Guatemala and Mexico
  