The fruiting body does not have a separation into stalk and cap, but is shaped like a funnel expanded at the top, normally up to about 10 cm (4 in) tall and 7 cm (2.75 in) in diameter (but said to grow exceptionally to 15 cm (6 in)). The upper/inner surface is black or dark grey and the lower/outer fertile surface is a much lighter shade of grey. The fertile surface is more or less smooth but may be somewhat wrinkled.
The size of the elliptical spores is in the range 10-17 µm × 6-11 µm. The basidia are 2-spored.
Craterellus cornucopioides, or horn of plenty, is an edible mushroom. It can also be known as the black chanterelle, black trumpet, trompette de la mort (French) or trumpet of the dead.
The Cornucopia, in Greek mythology, referred to the magnificent horn of the nymph Amalthea's goat (or of herself in goat form), that filled itself with whatever meat or drink its owner requested. It has become the symbol of plenty.
A possible origin for the name "trumpet of the dead" is that the growing mushrooms were seen as being played as trumpets by dead people under the ground.