Hoya curtisii is a miniature trailing hoya. This form of curtisii has small round olive green leaves mottled with grey. The apex is pointed on the thick succulent leaves. This will make a tight mat over the soil surface and then hang down.
Hoyas are part of a family known as Apocynaceae, which include the dogbanes, and are placed in the subfamily Asclepiadoideae, which are the milkweeds. Hoyas, commonly known as “wax plants” or “porcelain flowers”, are named as such due to the waxy appearance of their flowers (and in some cases, their waxy leaves). They are relatively non-fussy houseplants—growing vigorously and flowering consistently year over year. The first hoya was ascribed to the genus in 1810. As of 2015, there have been over 500 scientific names published.