The Collaborative International Dictionary of English v.0.48:

Petrocoptis \Petrocoptis\ prop. n.
   A genus of perennial tussock-forming rock plants; native to
   the Pyrenees and mountains of Northern Spain; it is similar
   to and sometimes placed in the genus Lychnis.

   Syn: genus Petrocoptis.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Petrocoptis
    n 1: perennial tussock-forming rock plants; of Pyrenees and
         mountains of northern Spain; similar to and sometimes
         placed in genus Lychnis [syn: Petrocoptis, genus
         Petrocoptis]