I just went out into the shop and looked closer at the boards and they have the tell-tale green tint throughout, so I'm 99% sure that what I got was poplar, just a bit denser/harder than what I'm used to. Again, maybe just moisture content, as I said it even felt heavier when I was carrying it... I'll be at Lowes in 2 hours... If everything feels heavier, I may go back to Home Depot, not because I want lower quality wood, but this harder stuff from Lowes was putting extra work on my Dewalt.