4 stars.

It was a very well structured book about the plant genus Hoya. From a botanist who identified some of the species, I expected more information about each single species (climate and ecoregion, needs, if the species is possible to cultivate as a houseplant or not, etc.) and pictures from the wild.

Recommended if you like Hoyas (or maybe have even one at home), but outdated in regards to the species names.