Distribution: It is ectomycorrhizal with conifers, widely distributed, and occurs almost year-round.
Spores: long cylindrical asci, each with eight smooth, broad elliptical spores that are forcibly ejected at maturity
Conservation Status: Not of concern
Edibility: The smell of G. cooperi is faintly aromatic, and it is considered a good edible species that can be used much like morels.
The smell of G. cooperi is faintly aromatic, and it is considered a good edible species that can be used much like morels.
Geopora cooperi is a fuzzy truffle that can become the size of a baseball. It typically is nearly spherical but often has an irregular to convoluted surface due to infolding of the peridium. The outer surface is brownish and covered with a mass of coarse flattened hairs. The gleba is whitish and pale brown and composed of multiple chambers. Similar to many cup-fungi and unlike most truffles, G. cooperi produces long cylindrical asci, each with eight smooth, broad elliptical spores that are forcibly ejected at maturity.
PNW Herbaria: Specimen records of Geopora cooperi in the Consortium of Pacific Northwest Herbaria database
CalPhotos: Geopora cooperi photos