Polyporus umbellatus

Jülich Polyporus umbellatus is an edible species of mushroom, found growing on roots of old beeches or oak (e.g.[1]).

The fruit 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 stalk is whitish grey, and originates from a strong, tuber-like nodule that is underground.

[2] Polyporus umbellatus may contain bioactive compounds with immunostimulating, anticancer, anti-inflammatory, and hepatoprotective properties.

This fungus has many branched stalks
Umbrella Polypore
Umbrella Polypore Caps & Pores