Although this plant is grows like edging near a semi-shaded area, we suspect it was not planted there. So far there is no evidence of flowers or flower buds. The stems are round and smooth. The current height is about 18 inches.
This really looks like something in the Urticaceae to me but it isn't a good match for the representatives in the Minnesota flora. Failing that, I suppose the other option is Asteraceae.
Since I posted the photos I've see this plant growing elsewhere along roadsides and woodland edges so I think it might be a common "weed." Unfortunately, I'm not adept at using a key and the lack of flowers is an additional disadvantage in that regard. Thanks.
I thought the asymmetrical leaves would be a good clue, but that didn't help me any. I hope you remember to post the flowers here when you see them.
Most of the Asteraceae tribe (Heliantheae) that are related to Heliopsis have a sunflower oil/seed smell to the crushed leaves -- is that possible for the person to check (with gloves or similar protection).
It's so un-hairy, though. But, Stachys tenuifolia is not hairy and grows all over neighbouring Wisconsin. I didn't think the stems looked square - @Bobs could tell us about that. If stems are square, Teucrium canadense might be in the running too?
I couldn't detect an odor that resembles what you described. However, a closer look indicates that the stems aren't entirely round as I had originally indicated. Although the main stem is entirely smooth so far as I can detect, minute hairs are present on the petioles and upper surface of the leaves. Also, stipules (or flower buds?) are developing in some leaf axils. My guess is that the plant is an urticaceae as you suggested a while ago. Here are some fresh photos:
After more investigation, I've concluded the plant is probably Boehmeria cylindrica (Small-spike False Nettle). I got some help here: Boehmeria cylindrica (Small-spike False Nettle): Minnesota Wildflowers Please correct me if I'm wrong.
I had considered that one (and thought it was the strongest candidate within the Urticaceae), but my concern was petiole length. In many of the photos online, the length of the petiole seems quite dramatic so that there is a sense of airiness about the plant. I don't quite get that from these photos, but maybe it is because of growing situation.
Flower buds have formed. So the plant isn't an Urticaceae). I've concluded it's probably white snakeroot. Flower buds have formed. I've concluded it's probably white snakeroot.