living rock

Noun	1.	living rock - usually unbranched usually spineless cactus covered with warty tubercles and having magenta flowers and white or green fruit; resembles the related mescal; northeastern Mexico and southwestern United States Synonyms: Ariocarpus fissuratus
	2.	living rock - highly succulent stemless clump-forming plants with gray-green leaves similar in texture to lumps of granite; South Africa Synonyms: living granite, stone mimicry plant