It is doubtful that the author would have known the specific name of the plant, A. coronaria. It is a Mediterranean species, but has been spread widely by gardeners. I don't know how common it was with gardeners in 1860.
It is not an American wildflower, where other species of the genus are often called "windflowers."

(Species are classified by leaf, stamen, bract, achene, sepal and petal, characteristics and not by color.)