Biotope One A Study of Flora and Fauna 
If you are into cacti and succulents then you are in for a tasty treat. Somehow we have missed this fine morsel. Please take a moment to download their latest and past issues of Xerophilia from their site.
The magazine contains an immeasurable amount of information complete with pictures and text. Its like being on an expedition looking for these wonderfully well adapted plants.
http://xerophilia.ro/
http://xerophilia.ro/wp-content/uploads/2014/12/Xerophilia_11_LD.pdf
