Bidens rebuttal
...d I’d never seen before, which is odd, because I feel like I know my local weeds. This one is exotic to me. It spontaneously erupted in our front and back yards around midsummer. (Was it in the mulch? Carried on a wandering cat or possum or goldfinch?) I was intrigued by its delicate leaves, which appear very genteel and vaguely floral. I was curious as to what kind of plant it was–so I let it be. Eventually it developed small unspectacular yellow...