Hoya revoluta

A common epiphyte usually associated with ants nest together with other myrmecophytes like Hydnophytums and Dischidia, this smallish Hoya is not easy to cultivate. It has characteristics fleshy leaves with an even thicker leaf margin. The flower clusters are also characteristics, with the outmost flower stalk longer and curving inwards. It is found throughout SE Asia including Borneo and Sumatra.

This is another Eu-Hoya and look very similar to Hoya micrantha.