Hey GuRu, thanks for excerpt. Could you please translate it for us English speakers lol? I want to be educated on this topic as well. Many thanks!
Leslie, it's a pleasure. Excerpt from 'Die Orchidee' 53(6) 2002
"In 1996 HERBERT BILLENSTEINER from the Palmengarten Frankfurt wrote in the 'Journal für den Orchideenfreund' about the existence of such plants in southern Thailand. They are supposed to grow in an area which is situated between the occurrences of Paph. callosum and Paph. barbatum. It is said that the plants of Paph. potentianum grow on an unnamed mountain at an altitude that lies between the altitudes of the other two species. While Paph. callosum grows in the higher, cooler region, the occurrence of Paph. barbatum lies in the lower, warmer region."