The same evening that I captured the fern bottom, I shot a less ambitious focus stack of what I think might be a delphinium. I didn't have any direct sun hitting this at six, p.m., but the lighting is decent.
The delphinium required a bit of post-processing by hand to correct for some areas that PhotoShop's focus stacking algorithm couldn't seem to handle. In addition, there were several ants traipsing about the flower. The moved haltingly enough to leave ghosts here and there about the bloom. I left one (at about 8 o'clock).