Cactus

A cactus is a member of the plant family Cactaceae, a family of the order Caryophyllales comprising about 131-140 genera with some 1,866 up to 2000+ known species. The word cactus derives, through Latin, from the Ancient Greek word κάκτος (káktos), a name originally used by Theophrastus for a spiny plant whose identity is now not certain. Cacti occur in a wide range of shapes and sizes. They are n... (Wikipedia)