What the heck is this? It's the center of a passionflower (Passiflora incarnata). I'm working on several paintings of the passiflora. One will be of the garden hybrid P. x belotii and several will be of the native flower P. incarnata, commonly called the 'Maypop'. The larger version of this will include the passionflower fruits, which are small green orbs about the size of hen eggs. More to come on this project.