Brent - I find what your wrote very interesting and thought provoking.
Steve C. - yep, the photo you posted is the plant that stung me.
So Cal Girl - Regarding the cure grows nearby, my friend, Sandy, wrote me to tell me another remedy (MUGWORT)....I wonder if it grows near stinging nettle. She learned about Mugwort from hiking w/a biology teacher at the Pecho Trail in Avila Beach. She sent me photos of Mugwort but I'm not good at posting photos. Mugwort??? Kinda sounds like something out of a Harry Potter story.
