Leucopaxillus gentianeus

Leucopaxillus gentianeus is a bitter-tasting, inedible mushroom commonly known as the bitter false funnelcap, or the bitter brown leucopaxillus. A common synonym is Leucopaxillus amarus. The bitter taste is caused by a triterpene called cucurbitacin B. The species was first described in 1873 as Clitocybe gentianea by French mycologist Lucien Quélet. František Kotlaba transferred it to Leucopaxillus in 1966.

The pileus ranges from 4-12 cm wide and the stipe from 4-6 cm long. This mushroom has an unpleasant smell, and a bitter taste.