<unk>  is a genus of trees in the order Sapindales, known for its fragrant resin. The biblical incense frankincense is an extract from the resin of the tree<unk>  sacra, and is now produced also from B. frereana.
Boswellia
Rhinophyma
Hexamita
Gonyaulax
Camptocormia
Biomphalaria
Mammillaria 
Digenea