Thanks for the comments, Gents.
After all the smoke cleared, I had what I wanted, cheap 1x4 :)
You all have confirmed my suspicions that it is a form of pine. The reason I need it is that I have to run my compressed air tubing across the floor of my shop attic, and I want to put a 1x4 strip of wood on each side so that I don't step on the copper tubing and crush it. I don't mind tripping over the screwed down boards, but I don't want to trip over the bare copper tubing and experience the attendant problems that follow.
Lee, I like your explanation too, the bean counters need simple names. ;)
Thanks....