Echinocereus-enneacanthus-complex Wolfgang Blum, Traute Oldach, Rene Goris, Peter Berresford, in German

With this special issue on the Echinocereus enneacanthus complex, the Echinocereus working group is continuing its tradition of preparing topics on specific species groups and making them accessible to interested cactus enthusiasts as a monographic publication.The book provides a historical overview of the plant group and its synonyms from 1848 to the present day. Echinocereusfreund 35, special edition 2022, contains: Echinocereus enneacanthus, E. enneacanthus ssp. carnosus, E. occidentalis, E. occidentalis ssp. breckwoldtiorum, E. stramineus and the first description of Echinocereus zapalinamensis. 416 pages, 341 images, 15 distribution maps, 18 herbarium sheets, 91 SEM images, 18 reproductions from older works.