The Flushing Bay Promenade at the northern end of Flushing Meadows-Corona Park is lined with black granite panels depicting one animal and one plant for each letter of the alphabet. (It's a pretty safe bet that ol' Henry Stern had something to do with this.) The artist didn't shy away from extinct or mythological beasts, including both "Dinosaur" and "Unicorn" in the collection. As I approached the end of the alphabet, I tried in vain to come up with an "X" animal or plant. The official selections were cop-outs: "Oxen" and "Oxalis".