A lot of people, if they could see it, would look down on the nature of my backyard lawn. It at least meets one of the criteria of a lawn, in that it is regularly mowed. When looking down on a lawn, or "lawn", one might as well identify the plants growing there. Warning: The photographs you are about to see may appall those who take pride in a lawn's appearance and pedigree. There is True Green, and then there is the Green Truth, herein depicted in unflinching detail.
Another prosperous weed that has made surprising inroads into the lawn this year is heal-all, a prostrate plant in the mint family that likely originated in Europe (rudely left out of the photo shoot).
All of these excel at playing Lawnmower Limbo.