Download one of the big wallpaper-sized versions of this photo, linked below, and you should be able to spot the distinctive leaves of several young Corn Lily plants, plus lots of the little white flowers known variously as Western Bistort, American Bistort, or Ladies' Thumb.
Spoiler alert: it's possible that knowing that the above photo is from the Mono Pass trail will improve your score in the "You Don't Know Yosemite" game.
(2) Choose a wallpaper size
(3) Not sure how to set your desktop wallpaper? Follow these instructions.