I have lots of sycamore, which I have stacked, off the ground, within the woodland, intending to use it as firewood. Most of the stacked wood is now about 12-18 months old. I have noticed that over the last couple of months a fungus has developed on some of the wood, the outward indicator of which is lots of bright orange dots, about 5mm across. There are smaller quantities of other wood, such as oak, ash and elm, but these do not appear to affected by the fungus.
My questions are 1) is this wood going to be any good as firewood; and 2) should I separate the affected sycamore from 'good' sycamore.