Geopora arenosa

Very similar to Geopora arenicola, but much smaller (<1 cm).

External hairs cylindrical, somewhat sinuous, thick-walled, septate, with faint pale brown intracellular pigment.

Medullary excipulum of textura intricata with numerous globose cells.

Ectal excipulum of textura globosa-angularis with thick-walled hyphae containing brown intracellular pigment.

Asci cylindrical, uniseriate, 8-spored, with inamyloid apical apparatus in Melzer's reagent.

Paraphyses filiform, smooth, hyaline, with simple septa, cylindrical and only very slightly widened at the apex.

Ascospores ellipsoidal, smooth, hyaline, thin-walled, containing one or two large oil droplets.