Share 'Single Origin and Cacao varietals'

If it's not explicitly labeled with the type of cacao used, how often does a single origin (such as Ghana, Madagascar, etc) utilize only one type of cacao? In other words, if I buy single origin cocoa beans or a single origin bar, am I likely to be buying chocolate from several different types of trees? Could one make the analogy, if you were to buy a single origin Ghana, it would be like buying…