Peziza domiciliana Cke. Fruit body 2-10cm across, at first goblet-like with a distinct stem, then soon expanding, flattened with an inrolled margin; white then soon pale yellow-ochre to brownish buff. Flesh fragile, thin; buff then golden yellow when broken. Odor not distinctive. Taste not distinctive. Asci 200-250 x 11-12µ. Spores smooth, ellipsoid, with 2 oil drops inside, 13-15 x 8-10µ. Paraphyses slender, septate, slightly swollen above. Habitat usually associated with buildings, often on damp sand, plaster, in cellars, on rotten wood in houses. Common. Found throughout North America. Season all year. Not edible.