Genea harknessii

Genea harknessii, commonly known as the dark geode truffle,^[1] is a species of fungus in the genus Genea. The species was described by Helen Gilkey in 1916.^[2]

Genea harknessii
Genea harknessii spores
Scientific classification
Kingdom:	Fungi
Division:	Ascomycota
Class:	Pezizomycetes
Order:	Pezizales
Family:	Pyronemataceae
Genus:	Genea
Species:	G. harknessii
Binomial name
Genea harknessii Gilkey 1916

The mature fruit is up to 2.5 centimetres (1 in) across.^[1] It has a convoluted, coral-like appearance. The exterior is dark brown (to nearly black) with a hollow interior, the surfaced of which is dark brownish.^[1] The sterile flesh between the dark interior and exterior 'skin' is white to grayish.^[1]

G. harknessii grows underground in forests, especially white oak forests, but also coniferous woods.^[3] Although pigs hunt it, its edibility to humans is unknown.^[1]