[Petronius]

I’m about 90% sure that’s poison sumac. I would clean up real good if I was you.

I checked it with my plant/leaf identifier app and it came back as poison sumac. The branch and leaves look the same.

 

[Petronius]

Thanks Petronius. The stem picture is particularly helpful.

I am not yet 100% convinced of it being Poison Sumac though. The taper of the base of the leaflet looks a little different, to me. And I did not get any rash at all from handling this, with the fully growing shoots, which normally have concentrated amounts of the toxin.

I sent my pictures to the invasive plant experts at Michigan State. They haven’t sent back an answer yet - somewhat telling.

Well, that was the best I could come up with. Hope the guys at Michigan State get back to you, if anyone knows, they will.