Hoya heuschkeliana is a wonderful miniature species with dark green, slightly cupped leaves that are usually about the size of a dime or penny.
The flowers are REALLY small, cute, and smell just like butterscotch candy (some say buttered popcorn). We find this to be a fast, easy grower. Much easier than the variegated version.
It is a relatively recent addition to the genus, having been described in 1989. Native to the Philippines. The most common flower color is pink, but it also comes in this yellow color form.