Edit: Thanks Woodswalker! It's wild sarsparilla (Aralia nudicaulis)
Most days I come home from my sitting-all-day-at-a-computer job and take a walk around the yard to see what's new. Some days I do this briefly in the morning as well, but feet get wet then.
This afternoon I checked out the shady areas of the lower blueberry hill and found this mystery plant in the shade. Lots of them. The berries and the leaves come from the same root on different stems. The leaves are 5 leaflets on 3 leaves that all join in one place. I'm not finding it in Peterson's Trees and Shrubs which makes me out of luck.
On another note, I actually have knit-able yarn! This is 96 yards (3 oz) of 2-ply wool that I bought at the Connecticut Sheep and Wool Festival this year. I have 8 oz of this fiber, which means I should have 250 yards of this when I finish it. Cool. It's a little tough to sit all day and then sit some more when I get home, so it may go slowly.
8 hours ago