It has a white or pale cream cap, and is funnel-shaped when mature, with the gills running down the length of the stem.

Considered by some to be a choice edible when young, this species has a cosmopolitan distribution, and is typically found growing in groups or rings in grassy pastures, roadside hedges, or woodland clearings.

[1] Other historical synonyms include Clitocybe gigantea (Quélet, 1872),[2] Paxillus giganteus (Fries, 1874),[3] and Omphalia geotropa var.

The cap is smooth and creamy white in color, but may develop brown stains and circular cracks with age.

[17] Aspropaxillus giganteus can form fairy rings in grassy areas like pastures,[20] and is also found along roadsides;[21] it produces fruiting bodies in summer and autumn.

[21] Burrows suggests preparing specimens by cutting them up and boiling the pieces, and disposing of the water; then they may be used in dishes such as stews and casseroles.

[22] The odor has been said to be farinaceous or similar to fish meal;[12] the taste and smell of the mushroom have also been alternately characterized as "mild and pleasant" or "truly disgusting".

[26] Aspropaxillus giganteus contains a bioactive compound named clitocine that has antibiotic activity against a number of bacteria that are pathogenic to humans, such as Bacillus cereus and Bacillus subtilis;[27][28] an earlier (1945) study showed antibiotic activity against Mycobacterium tuberculosis, Salmonella typhi, and Brucea abortus.

[30] The mycelia of A. giganteus, when grown in liquid culture, has been shown to produce phenols and flavonoids that have antioxidant activity.