Asclepias viridis (Green Antelope Horns)
Marais des Cygnes NWR, Linn County, KS
This is one of several species of milkweed with green flowers. Milkweeds are the primary food of Monarch Butterfly caterpillars, and are what makes them so toxic. So if you're lost in the woods, please refrain from eating anything that looks like this. It probably won't kill you, but you'll feel pretty awful.
