Resupinatus applicatus, commonly known as the smoked oysterling or the black jelly oyster, is a species of fungus in the family Tricholomataceae, and the type species of the genus Resupinatus.

First described in 1786 as Agaricus applicatus by August Johann Georg Karl Batsch,[1] it was transferred to Resupinatus by Samuel Frederick Gray in 1821.

[2] The cuplike to convex fruit bodies of the fungus are 0.2 to 0.6 cm (0.1 to 0.2 in) in diameter, and grayish-blue to grayish-black in color.

The dry cap surface is covered with small, fine hairs.

[4] It is widely distributed in North America,[3] Europe, and Australia.