xerophytic

from WordNet (r) 3.0 (2006)

xerophytic
    adj 1: adapted to a xeric (or dry) environment; "cacti are
           xerophytic plants"; "xerophytic adaptations"

from The Collaborative International Dictionary of English v.0.48

xerophytic \xe`ro*phy"tic\, adj.
   1. (Botany) [Gr. xhro`s dry + fyto`n a plant.] Adapted to a
      xeric (or dry) environment; as, cacti are xerophytic
      plants; xerophytic adaptations.
      [WordNet 1.5]