Plants at first globose and submerged, becoming superficial and expanded when 2-3.5 cm. across. Exoperidium split to about the middle into 8-14 equal, acute, expanded rays; fleshy layer thin, more or less completely flaking away and leaving the pallid tan-coloured fibrous layer exposed; exterior covered with debris held by the adnate mycelial layer, which flakes away more or less completely; base concave. Endoperidium pedicellate, subglobose, 1-2 cm. diameter, brown, smooth, shining, apophysis frequently present, base smooth, pedicel short. Peristome sulcate, prominent, conical, elliptical, to 8 mm. long, concolorous or darker, sometimes two stomata present in the same plant. Gleba chocolate brown or almost black; pseudo-columella wanting. Spores globose or subglobose, 6-8 um diameter, epispore dark brown, 1 um thick, coarsely and somewhat densely verrucose, appearing areolate, sometimes shortly pedicelled.A distinct species, separated from the preceding by the elliptical peristome, dark colour of the gleba, and large warted spores which closely resemble those of G.limbatum.

DISTRIBUTION : Australia. South Australia: Pearson Island, Great Australian Bight, J. B. Cleland, type collection (1).