Today I found a new plant: black-eyed susan grass. Never heard of it? That could be because it doesn't exist. Blue-eyed grass (Sisyrinchium angustifolia): now that's a thing. I've even grown it, though not reliably.
So how did I happen to find this non-existent black-eyed susan grass? Well, first, I didn't mow my yard for a month. Maybe five weeks. Normally in the summer four to five weeks is a typical span between mowings, but with actual rain this year it needed mowing about three to four weeks ago. But I was on vacation. Then it was hot. Then I was so busy I had not a single daylight moment to myself. Then I was gone again. Then yesterday, well, yesterday I took a breather. Then today I started to continue that breather. But 1/2 hour before dark I decided the yard must be cut right now.
I dragged the mower out of the garage and coaxed it to start. I sweet-talked it into venturing through the tall grasses and taller weeds. "They" say one should cut about a third off grass stems in a mowing. At my mower's highest setting (where I generally leave it), I was cutting off not less than 2/3 of the growth. It was slow going.
Because it was slow going, I was able to take time to look at what was being mowed down. And there it was: black-eyed susan grass. It closely resembled an annual rudbeckia, just starting to flower. Since it was growing in my lawn, however, it must have been a grass.
If I'd stopped to photographic-evidence-taking, there's no way the mower would have started again. You'll just have to take my word for it.