Originally Posted by CarolinaQue
I'm going with ash on the left and maple on the right. Atleast, that's how the ash and maple looks here in Maine where I live.
I agree with my fellow Mainah, ash and maple.
Active mold or mildew means that your wood is wet, what I see is spalt, which is caused by a fungus that grows in wood in wet conditions. I can see it especially in the maple, indicated by those dark stains in the growth rings. If the wood is dry the spalt should cause no problems unless you are allergic to it. I have used spalted apple wood to cook with, with no ill effects or bad or "off" tasting meat, YMMV. For a while there was a bit of chatter on the forums about cooking with spalted wood, it seems to have died down.
I have included a link on spalting and fungus that give a lot of good info on the subject-