Not quite sure which kind of trees these are but at certain times of the year they bloom and shed these very cherry-blossom-ish yellow petals that make for some very picturesque scenes, especially in Mililani where they're all over the place!
In places they're so bountiful as to create little drifts of the stuff, and like the title says, it ain't sakura, but for an afternoon walk in Hawaii, makes for a pleasant and calming time!