English: White knight.
German: Weisse ritterling.
Synonym: Agaricus albus; Gyrophila alba.
Name: derives from the Greek trichos meaning hair and loma meaning hem, fringe or border.
Region: Europe, India, possibly North America.
Habitat: mycorrhizal with Quercus.
MycologyType: mycorrhizal; all-white; smell strong, prominent, unpleasant sweet, like honey and radishes; taste disagreeable, acrid or bitter; staining blue-green with thallium oxide and sulfoformol; fruiting from August to December; growing in sizeable fairy rings.
Cap: convex or flat; white, with a pale yellow tinge, more yellow or ochre with age; 3 to 8 cm wide and white; convex with a slight boss, broadly conical; with inrolled margins.
Hymenium: adnexed; gills are thick, widely spaced, with finely serrated edges.
Stipe: bare; white, to pale yellow or ochre-tinged; 3 to 8 cm high, 8 to 15 mm wide; no ring
Spore print: white to cream.
Spores: oval or oblong; 5 to 7 μm long, 3 to 5 μm wide.
Use: inedible.