The fruiting body is composed of numerous (sometimes several hundred) caps. They are 1–4 cm in diameter, deeply umbilicate, light brown, and form the extremities of a strong, many branched stalk. The compound fungus can be up to 40 cm in diameter. The pores are narrow and white. The stalk is whitish grey, and originates from a strong, tuber like nodule that is underground. The flesh is white, rather soft when young, although hardens with age
Polyporus umbellatus is a rare, edible species of mushroom, found growing on roots of old beeches or oak (e.g.).
1. Kunca V., 2011: Ecology and incidence of Polyporus umbellatus in Slovakia. Czech Mycology 63(1): 39-53.