I think the genus and species is Ohia lehua, which is a tree with beautiful
red flowers, historically polinated by some of the honeycreepers.  I've seen
some honeybees on some ohia flowers, but don't have any idea if it's feasible
to make a crop of honey from this flower only.  There are so many flowers in
Hawaii it's hard to imagine how you could restrict bees to ohia.
 
Anybody else know anything?