Indian Blood is a memory play, a period piece, a coming-of-age comedy, a family drama: Combining all that into a remotely coherent piece would be a victory for any playwright. That it's also touching but not treacly, self-aware but not smart-alecky, and weighty while clocking in under two hours is something few dramatists could manage: Richard Greenberg, Horton Foote, and, in this case, 75-year-old A.R. Gurney. As he did in 1999's Ancestral Voices, Gurney returns to his native Buffalo and shakes down the family tree for inspiration. His narrator/stand-in is Eddie (Charles Socarides), a full-of-potential, afforded-every-opportunity 16-year-old who blames his disruptive behavior drawing literary porn in Latin class, for example on his ''Indian blood.'' And looking to his elders mainly, his paternal grandparents for forgiveness, validation, and direction proves less rewarding than our young hero expects. ''Are you in love with someone?'' queries his grandmother (Pamela Payton-Wright). ''Does she have an attractive nose?'' Turns out, underneath their buttoned-up exteriors, Gurney's prototypical WASPs are as dysfunctional as any other clan drifting, fighting, fearful of their future. ''We're being bypassed,'' says grandpa (a masterful John McMartin), ostensibly of his once-booming, now-declining hometown. ''We're being bypassed. We're through.'' Let's hope not we want to hear more from Gurney's family. (Tickets: TicketCentral.com or 212-279-4200)

