Collection examined: Tasmania, Marriott's Falls, June 1924, L. Rodway, type.

Ascomata superficial, solitary or several arising from a common mycelial pad, stipitate, up to 14 mm high, fertile head subglobose or lobed, to 3 mm diam, pale green when fresh (Rodway) be coming pale brown on dried specimens, totally covered with the hymenium except where the stem is inserted in an umbilicus, stalk 1 mm thick at the base, tapering upward, pale green fading to pale brown at the apex. Medullary excipulum a narrow band of interwoven, hyaline hyphae up to 3 mm diam. in a gelatinous matrix and merging into the parallel hyphae of the stem which is composed of two distinct tissues - the cortical layer up to 100 µm thick of parallel pigmented hyphae with cells up to 40 x 10 µm, the inner tissues of long-celled very thin walled hyaline or lightly pigmented hyphae with finely granular contents up to 5 µm diam. The stem is covered with a dense layer of superficial, septate hairs, simple or branched cylindrical or with inflated and contorted cells, up to 150 x 9 µm. Asci cylindrical with a long slightly tapering stalk, with 8 spores in a fascicle, the small pore blued with iodine, 105-120 x 4-5 µm. Ascospores filiform, slightly tapering, septate, 1-1.5 µm diam, fascicles not exceeding 70 µm in length. Single ascospores not measured. Paraphyses cylindrical with clavate tips, 1-5 µm thick, tips to 3 µm thick, 15 µm longer than asci, simple or branched from lower third.

This species occurs on fragments of eucalyptus debris immersed in water or lying on very wet ground and is apparently rare in Tasmania and not yet recorded in Victoria.

Vibrissea. tasmanica, - n.s. Solitary or two or more arising from a common base, on dead twigs in the water or on wet ground; stem slender, glabrous, pale dull green, up to 1 cm. long; head hemispheric, 3-4 mm. diameter, umbilicate beneath for the insertion of the stem, pale dull green glabrous, asci narrow, cylindric, 180 x 3 µ, spores filiform 80-120 x 1 µ, about 10 septate.