According to PCARRD-DOST website, “Hoya, commonly called wax plant, belongs to the Asclepiadaceae family. They are once part of the Apocinaceae family. In the Philippines, hoyas can be found all over the islands at all altitudes. As early as 1837, Philippine Hoyas was mentioned in the publication of Flora de las Islas Filipinas. To date there are 51 species which have been identified.”
Photos and Philippine Hoya species provided for by Mr. Fernando B. Aurigue, Science Research Specialist and Project Leader, Agricultural Research Section, Atomic Research Division, Philippine Nuclear Research Institute (PNRI).