Xerula radicata (Relhan) Dörfelt
Agaricus radicatus Relhan
Collybia radicans P. Kumm.
Collybia radicata (Relhan) Quél.
Gymnopus radicatus (Relhan) Gray
Mucidula radicata (Relhan) Boursier
Mucidula radicata f. marginata Konrad & Maubl.
Oudemansiella radicata (Relhan) Singer
Oudemansiella radicata var. marginata (Konrad & Maubl.) Bon & Dennis
Xerula radicata var. marginata (Konrad & Maubl.) ined.
Deep root mushroom, rooting shank
Deep root mushrooms are natives of North America and Europe.
Identification: These mushrooms have tall, thin stalks, 1¾-8" (5-20 cm), and robust root systems which extend 8-10" (20-25 cm) underground. Stems lack a ring, and there is no veil. They live on rotting deciduous wood (especially beech), though they usually appear to be growing in the ground, deriving their nutrition from buried wood. The caps are 1-4" (3-10 cm) in diameter, yellow or olive-brown, with wide, white gills. They produce white, cream-colored, or yellowish spore prints. Comprehensive identification is a bit of a challenge—see Michael Kuo's site for details.
Medical: Deep root mushrooms have antihypertensive, antifungal, and antitumor effects.
Edibility: Technically edible. Apparently non-poisonous, but not tasty.
Xerula on Michael Kuo's MushroomExpert.com
Xerula radicata on Medicinal Mushrooms: Investigating Bioactive Compounds from Kingdom Fungi
Xerula radicata on RogersMushrooms.com
Xerula radicata on www.naturephoto-cz.com (great photo)
Xerula radicata on The Mushroom Hunter (more great photos)
Xerula radicata description by Thomas H. Kent, last updated 25 May 2020.