I had spotted this fungi growing on a stump. This is the biggest one I have come across.
Found out later that its not bracket fungi but as artist's conk or shelf mushroom. (Ganoderma applanatum) The best part is that its used for artwork, scratching the bottom part where the spore's are and that gives the shaded effect.
But I guess this one is dead, (all the top part is dried up)
(more closer view)