This Adventure Time With Finn and Jake photo contains
spurge, buttercup, butterflower, butter flower, crowfoot, goldcup, kingcup, winter jasmine, and jasminum nudiflorum.
There might also be
western buttercup, ranunculus occidentalis, st peter's wort, hypericum tetrapterum, hypericum maculatum, great st john's wort, hypericum ascyron, and hypericum pyramidatum.