Geopora sumneriana is a species of European fungus belonging to the family Pyronemataceae.
This fungus forms a rounded brown, roughly hairy ascocarp underground. This fruit body remains subterranean for most of the year but breaks the surface in the spring to form a cream-coloured cup (apothecium) up to 7 cm across and 5 cm tall. This species occurs in small groups and is exclusively found associated with cedar trees.
. Michael Jordan (mycologist) . The Encyclopedia of Fungi of Britain and Europe . . 2004 . 38 . 978-0-7112-2379-0.