You searched for: “most petrophilous
petrophilous (adjective), more petrophilous, most petrophilous
In biology, descriptive of something that  thrives on rocks or in stony habitats: Most species of rattlesnakes found in the Mojave Desert live among the open, rocky areas, often hiding out of the sun in the cracks of boulders.
A wildcat and plants that exist on rocky areas.
—Source: Natur-Palette , Zurich Insurance Calendar, 1992.