Frankincense, SacraThe original frankincense. Boswellia sacra, from the southern coast of Arabia. Monsoon fed wadis behind the Dhofar mountains. The trees grow in a narrow band southern Oman, parts of Yemen, a sliver of Somalia and do not grow well outside this terroir. This is the geography Pliny meant when he wrote about Arabia Felix, the fortunate Arabia. Fortunate because of frankincense. Most frankincense sold today is Boswellia carterii the Somali species that