We have this down here in Houston. Everybody considers it to be a weed, but we have one growing outside our kitchen window. Our family has always called it “Cashmere Bouquet” but that’s just what we call it, could be wrong.
It has a perfumey blossom, but the sap of the plant’s broken stem has a mildly unpleasant stinkbug twang, mixed in with mown lawn and crushed cilantro scents. The scent is also a little bit like chewing up a mouthful of celery LEAVES. I think it doesn’t want to be eaten. (Mind you, I’m saying that from an evolutionary standpoint not a culinary one!)
When it dies back it leaves hard stabby little sticks sticking up all over the alley.