•The #boro root has a curiously disjunct
distribution.
•There are scattered occurrences as far apart as Sierra Leone and Kenya occurring in very
different language families.
•This is another name spread by the Portuguese, as many (though not all) of its attestations are
coastal.
•However, its origin is unknown and there are no early textual references to this term.
•It could well be associated with the introduction of a particular cultivated subtype, although
there is no clear evidence
for this