Rhodocollybia butyracea forma asema — Butter-cap — Marasmiaceae

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Small to large mushroom. Convex cap, aging to planar, often umbonate, smooth, slippery when wet, reddish-brown to pale brown, aging to pale tan. Gills crowded, attached or free, white, edges becoming frayed when mature. Tall stalk, club-shaped, sometimes pinched at base, whitish above, similar to cap below. Saprophytic.

Synonym: Collybia butyracea
 
Habitat: Scattered to gregarious, humus in coniferous forest.

Scent: Not distinctive

Spores: White to pale pink

Season: Autumn, Spring.

Smooth cap when dry, tall stalk
Lyre River Conservation Area

Convex cap, pale tan with age
Lyre River Conservation Area

Crowded gills, whitish
Lyre River Conservation Area

Whitish stalk, similar to cap
Lyre River Conservation Area