Eureka!

I have to look up the name of one tree at this time every year. Today, I finally checked a number of reputable dictionaries, including Oxford. What a relief! Either of my spellings is correct.

By any name -- The Tree Whose Leaves Create Their Own Light, or The Tree Whose Female Bears Stinky Fruit, or The Ancient One, or The Healing Tree, or Gingko or Ginkgo, this tree mounts a brief spectacular show each fall.

When it does, no dictionary can contain it.