▁an ▁econom ically ▁important ▁oil seed . ▁The ▁tree ▁is ▁known ▁as ▁m ung uel la ▁( Ang ola ), ▁nj ang sa ▁( Cam ero on ), ▁b of ek o ▁( Z aire ), ▁w ama ▁( G h ana ), ▁ok h uen ▁( N iger ia ), ▁k ish ongo ▁( U g anda ), ▁ak pi ▁( I v ory ▁Coast ), ▁d j ans ang , ▁ess ang , ▁e ze z ang ▁ ▁and ▁n jas ang . ▁Two ▁vari eties ▁of ▁the ▁tree ▁species ▁are ▁recognized ▁R . ▁he ud el ot ii ▁var . ▁he ud el ot ii ▁in ▁Gh ana ▁and ▁R . ▁he ud el ot ii ▁var . ▁a fr ican um ▁in ▁Niger ia ▁and ▁west wards . ▁ ▁Tax onomy ▁The ▁m ong ongo ▁fruit ▁( Sch in zi oph y ton ▁ra ut an en ii ) ▁was ▁previously ▁considered ▁a ▁member ▁of ▁this ▁genus ▁but ▁has ▁since ▁been ▁placed ▁into ▁a ▁genus ▁of ▁its ▁own . ▁ ▁Sub species ▁and ▁vari eties ▁ ▁Ric in od end ron ▁he ud el ot ii ▁sub sp . ▁a fr ican um ▁( M üll . Arg .) ▁J . L éon ard ▁- ▁tropical ▁Africa ▁from ▁Niger ia ▁east ▁to ▁Sud an ▁and ▁T anz ania ▁and ▁south ▁to ▁Moz amb ique ▁and ▁Ang ola ▁ ▁Ric in od end ron ▁he ud el ot ii ▁var . ▁t oment ell um ▁( H utch . ▁&