Etym.: the name refers to the clathrate ornamentation of the spore.
Spore-sac 10-15 mm diam, globose-depressed to almost hemispherical. Exoperidium thinly. but distinctly membranous, very persistent on the endoperidium, covered by clayish soil. Endoperidium when finally uncovered ochraceous tawny, smooth. Mouth circular, small, hardly projecting, with a hint of a lip. Socket widely separated from the stem, not very deep, membrane entire, rather thick. Gleba ochraceous ferrugineous. Stem 20-30 mm, straight, rugose-striate, dirty brown.
Spores when observed under L.M., obscurely and minutely verrucose, light brown, globose to irregularly ellipsoid, 4.6-6.4 x 4.3-5.4 µm, with rather thick walls; under SEM they appear reticulate-clathrate, with about 15 meshes per hemisphere, the walls tuberculate, particularly at the bottom of the meshes.
Habitat: clayish soil in pastures.
Distribution: North America: S United States.
Holotype: United states, Texas, Cesco, in a barren clay pasture, leg. E. A. Smith 1216, 11.IX.1935 (BAFC 29.492).
