Pp. 148; color frontispiece, 222 fine color photographs, 9 text-figures and black-and-white photos including a portrait of N. E. Brown, 2 maps. Publisher's original red cloth, lettered in gilt on the spine, color pictorial dust jacket, sm 4to. Lithops is a genus of succulent plants in the ice plant family, Aizoaceae. Members of the genus are native to southern Africa. The name is derived from the ancient Greek words lithos, meaning "stone," and ops, meaning "face," referring to the stone-like appearance of the plants. These plants avoid being eaten by blending in with surrounding rocks and are often known as pebble plants or living stones (from Wiki). This hardbound edition was limited to 250 numbered copies, this being copy no. 232. The fine photographs by Christopher Barnhill with additional photographs by Gerhard Marx and John Trager. The line drawings are by Gerhard Marx. There is a key to species of the genus Lithops by Jonathan Clark in Appendix 9. This volume is warmly inscribed by the author on the title page. A rare work autographed by the author.