Mineola Nature Preserve. Found growing on willow on the shore of a slough. 'In North America, a form of the species is commonly encountered in which the gills are malformed and appear covered with a partial veil or Hypomyces of some kind. Kauffman (1918) called it a 'monstrous form' and a 'monstrosity'; Smith (1979) called it an 'abortive stage.' ' This one appears to be the 'monstrous form.' http://www.mushroomexpert.com/lentinus_tigrinus.html