Our contributors are mentioned in alphabetical order despite all other criteria.

Carrillo Reyes, Pablo

Pablo Carrillo Reyes is a botanist working with the genus Thompsonella and Villadia. He already described various new Crassulaceae. The photo shows him with his girlfriend Danae who's a botanist too.

Jesús Cortés Aguilar

Jesús Cortés lives with his family in Guadalajara, Jalisco, México. For many years he has devoted a great deal of his time to his hobby of the Mexican cacti and succulents. He's a biologist with his main field as a bio technician. He works in a laboratory which specializes in the in-vitro-reproduction of ornamental plants (especially ferns and orchids). He travels a lot in his country to visit plants in habitat, to study them, and to take pictures. Since he's working with a digital camera, he was ready to let us use his pictures for our database. We're very grateful for that! He can be reached by e-mail (in Spanish language!) under jcortesaguilar@hotmail.com.

James E. Low

James (or Jim) Low lives with his wife Suzanne in Rancho Cordova, California, USA. For many years he has been devoted to the American Crassulaceae. He is especially fond of the genus Sedum. For several years he has been collecting data on New World species in this family, complete with useful references. He coordinates closely with Helmut Regnat (see below) in this hobby. The quality of our database has been improved a lot with his data. He can be accessed by his private email address jameselow@yahoo.com.

Helmut Regnat

Helmut Regnat lives with his wife in Ottobrunn near Munich, Bavaria, Germany. For many years he has become well known as an authority on the American Crassulaceae. In a time-consuming and painstaking work of over 40 years he collected and carefully compiled first descriptions of all known valid species in all genera of the American Crassulaceae, as well as most synonyms and later changes. With his approval we are permitted to make use of all this data in preparing our website. Please note that it may require us several years to actually incorporate all of this valuable data in a form that we feel is easiest for electronic use. Helmut is also heavily committed to the Munich branch of the German Cactus and Succulent Society of which he is now president. Note that Myron Kimnach chose to honor Herr Regnat by naming a new species of Echeveria after him (Echeveria helmutiana). Helmut is currently not accessible by e-mail.

Torres García, Ignacio

Ignacio Torres García is a biologist working in the etnobotanical field. Right now he's working in the Tehuacan-Cuicatlan biosphere reserve, where he wants to find a sustainable harveste rate (based on demographic methods) of Agave potatorum..