Yellowing curtain crust

Individual brackets are 3 to 7cm across and have irregularly wavy edges. The colours, which are zoned, are various shades of greyish-orange or greyish white. There is no stem, but the attachment region is usually quite narrow. The lower spore-bearing surface is smooth, without pores, and is yellowish to browngrey. The flesh is 1 to 2 mm thick and is less distinctly zoned. The spores are white or very pale brown.