The Slinder-Stemmed Champion (Agaricus leptocaulis) is a decomposer that can be found in soil in mixed woods from late summer to early fall. It has been reported in the Midwest to the East Coast. It can be found growing alone or in small groups. The cap and stem bruise yellow where handled.

Morphology

The cap shape is evenly rounded to broadly rounded, becoming flat with age. Sometimes with a slight umbo. Sometimes splitting radially at the margin. The cap texture is smooth and dry. The color is grayish-brown with brown scales that are more densely collected at the center than the margin.

The gills are free from the stem. The gill color is light pink when young, becoming darker pink, then becoming brown with age. This is due to brown spores maturing on the gill surface over time.

The stem features an elastic pendant-shaped skirt on the top half and a small bulb on the base. Sometimes curved. 1.5-4.5 inches long (3.5-11.5 cm) × 0.3-0.5 inches wide (8-14 mm).

The odor ranges from indistinct to pleasant to phenolic (like band-aids or glue). The spore print is brown.