Illustrated Handbook of Succulent Plants: Asclepiadaceae

From the reviews:

"The volume on the Asclepiadaceae is now the fifth volume … of the six projected volumes of the Illustrated Handbook of Succulent Plants. Of the five volumes … these are by far the best series of photographs to have been published … . For the interested collector … there is plenty in this book with which to be fascinated. … this is a very attractive volume and will be of considerable use to many collectors … ." (Peter V. Bruyns, Plant Systematics and Evolution, Vol. 239 (3-4), 2003)

"The six volumes of Illustrated handbook of succulent plants … treat ‘over 9000 taxa of all succulents except Cactaceae’ … . This series is a reference manual for taxonomists and horticultural cognoscenti. It compiles up-to-date information not readily available from other sources … . This series is invaluable to identify succulents… . In summary, this is an excellent series, a significant contribution to the literature, and a superb production." (Rudolf Schmid, Taxon, Vol. 53, 2003)