The plant is growing as I said on a telephone pole on a busy four way stop. I will call someone who’s husbands family owned that house and hopefully still does. I’ll ask if I can come look at the plant close it. If it is the correct plant what can I put the leaves in? Can I put them in a large plastic bag or paper bag? What do you suggest?
I’d suggest drying the leaves, then put them in a paper bag. The medicinal compound is heat-stable, so you can even dry them in an oven set on low.