Marasmius sullivanti Montague Cap 0.5-2.5cm across, convex becoming flatter with a faintly lined margin; bright rusty red or orange-red; dull, unpolished. Gills free but reaching the stem, close, narrow but slightly swollen in the middle; white, with edges faintly pink at first. Stem 5-25 x 1-2mm; whitish at the top, reddish brown becoming darker, almost black, toward the base; hornlike and rigid with a faint bloom, rough stiff hairs on the base. Flesh pallid. Odor none. Taste faintly bitter. Spores ellipsoid, smooth, 7-9 x 3-3.5ì. Deposit white. Habitat singly, scattered, or in groups on debris and humus in hardwood forests. Not common. Found in southeastern North America, north to New Jersey. Season July-August. Edibility not known.