1. Nees Institute for Biodiversity of Plants University of Bonn Germany
2. Sukkulenten‐Sammlung Zürich / Grün Stadt Zürich Zürich Switzerland
3. Museo de Historia Natural Universidad Nacional Mayor de San Marcos Lima Peru
4. Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben Germany
5. Departamento de Silvicultura y Conservación de la Naturaleza Universidad de Chile Santiago Chile