The Collaborative International Dictionary of English v.0.48:

Xerophilous \Xe*roph"i*lous\, a. [Gr. xhro`s dry + ? to love.]
   (Bot.)
   Drought-loving; able withstand the absence or lack of
   moisture.
   [1913 Webster]

         Plants which are peculiarly adapted to dry climates are
         termed by De Candolle xerophilous.       --Goodale.
   [1913 Webster]