The poisonous and/or acrid
L. repraesentaneus,
L. torminosus ,
L. rufus and
L. scrobiculatus are similar in appearance. They differ in that the cut flesh exudes a white rather than orange milk and does not eventually discolor to greenish. The not-recommended
L. helvus differs in that the cap has a salmon/pink color, the spore deposit is tan, the cut flesh oozes a colorless, watery milk, and the odor is liquorice-like. The edible but rare
L. rubrilacteus differs in that the cap and latex are more reddish.