fulfilling Herakles’ behests of old, hath laid upon one’s hair above his brows pale-gleaming glory of olive.
Attribution of the games and its rules to Heracles mythical to make them authoritative and important just as in an earlier ode Pindar attributed to the victor divine pedigree.
No. Now I see “that tree” refers to the above mentioned olive, as he reiterated below, it was a crown of greatness

