As I walk by the river these days, I am overwhelmed by itchy green things. Poison hemlock plants tower over me on their purple mottled stalks, their delicate white flowers opening like tiny parasols over their broad, finely-cut leaves. They are as poisonous as their name suggests (it’s the extract of this hemlock, conium maculatum, in fact, that likely killed Socrates), which might strike me as ominous if I wasn’t so busy avoiding the Japanese hops spreading their itchy tendrils all over ground. Both of these plants are invasive aliens, crowding out the less rigorous (and, quite literally, less irritating) native plants, like the nodding pale touch-me-nots pictured below. Native or not, I photograph and identify every flower I see on my Wildflowers of the Monocacy page, which I hope will help others who wander the trails by the river.