Aside from their common color, beauty and ability to snarl traffic, the different varieties of cherry blossoms are as unique as snowflakes. Actually, some cherry blossoms aren’t even pink — the Gyoiko, for instance, is green. Unfortunately, that level of eccentricity wasn’t able to take root in D.C. All 18 of the Gyoiko trees planted in the White House garden in 1912 have since died. (Or perhaps they just moved to Baltimore.) Still, there are more than a dozen varieties of flowering cherry trees in the District, each with its own distinct personality. With this handy quiz, created with the help of Melanie Choukas-Bradley, author of “City of Trees” and “A Year in Rock Creek Park,” you can discover your flowering-tree alter ego just in time to go petal peeping.