Burntime it looks like poplar to me ...where you are they may call it aspen...if it's super easy to split ...that's what I'm betting it is. btw...I'm real comfortable using the face cord reference...that's how most people buy there wood here. Looking at a stacked row for the side a face cord is 32sq ft. Of course you'd pay more for a face cord with a 20" width than a 16" width...if you were buying. Poplar is probably on the softer side of the hardwood scare but it's an excellent shoulder season wood...or the kind of wood that if you're home during the daytime and have the opportunity to tend the stove frequently that wood will keep you warm...it just doesn't last long. So big deal just save that wood for when you're in and about your house...and use the harder wood for when you sleep. If you burn that your still saving money... and that's why we all burn.