To satisfy my curiosity, I went to Select Seeds website and saw that they are selling Emilia coccinea. For the record, Florida Tassel Flower is Emilia fosbergii and Lilac Tassel Flower is Emilia sonchifolia. Still, the Select Seeds species doesn't look much bigger than the ones we grow here. I looked it up on the Plant Database. However, it seems to be a butterfly attractant, too as user
@poisondartfrog posted this awesome picture of a Fritillary on it. Seems like a small flower for a Fritillary but those Meadow Frits I've seen in WV don't get very big.