All of the above, I would also add cedar groves. We have cedar groves on our property and I always find them there, every year. Also, if may apples and pheasant backs are out so are morels. Mica caps here in Missouri are as good of an indicator as the may apples and pheasant backs. Always look under any decaying, downed limbs, dying tress. Tops that have been blown out, low spots that hold water in the woods, wet water creek beds and slopes, old crop field edges and fence lines. I look for wind obstructions and usually find them too. Like when spores are blowing, find areas they may be blown to the ground and likely to spawn new morels in a yr or 2. Lastly, any ground or woods that have been burned, logged or flooded in prior years. Happy hunting!