Media type: E-Article Title: Mexican Cliff-dwellers : In search of Graptopetalum, Pachyphytum and Cremnophila : In search of Graptopetalum, Pachyphytum and Cremnophila Contributor: ETTER, JULIA; KRISTEN, MARTIN Published: Cactus and Succulent Society of America, 2006 Published in: Cactus and Succulent Journal, 78 (2006) 6, Seite 251-260 Language: English DOI: 10.2985/0007-9367(2006)78[251:mc]2.0.co;2 ISSN: 0007-9367 Origination: Footnote: