Buttercups (Ranunculus sp. probably R. repens) and brooding sky, near Waterlily, North Carolina. 

[The Phylogenist’s Lament: Of my college textbooks, I am saddened most that I sold my copy of Vascular Flora of the Carolinas (Radford et al, University of North Carolina Press) for a mess of pottage. The times were undeniably hard, but surely I could have gone without a meal or two to hold on to this gem.]