This unique monograph of the genus Lithops features all 91 currently accepted species from a field research perspective and provides a valuable guide to lithops in their natural surroundings. Almost 2000 colour habitat photographs and 13 typographic maps illustrate lithops relationships, diversity and distribution in southern Africa and a new simplified taxonomy is suggested. 60 portraits and related biographic information honour the dedicated work of past and present Lithoparians. A thorough review of published botanic and scientific data on Lithops plus a comprehensive annotated bibliography including over 700 references make this book a benchmark for plant lovers, succulent breeders and specialists of the unparalleled Living Stones.