The Collaborative International Dictionary of English v.0.48:

Saxicoline \Sax*ic"o*line\, a. [L. saxum a rock + colere to
   inhabit.] (Zool.)
   Stone-inhabiting; pertaining to, or having the
   characteristics of, the stonechats.
   [1913 Webster]

WordNet (r) 3.0 (2006):

saxicoline
    adj 1: growing on or living among rocks [syn: saxicolous,
           saxatile, saxicoline]