This flowering shrubby plant is everywhere around my home in southern NJ, USA right now. I think it is shadbush but would like confirmation and if possible species ID.
I think you are exactly right, I am using a newcomb guide and Rosa multiflora looks perfect to me... I am still struggling to use this guide, although it is definitely a great help.
Welcome, Tom. Yes, you're in the right place, and no worries if not - the moderators can move postings to the correct sub-forum. Just ask your questions in the place that seems most reasonable to you.