Sori in scattered ovaries, sometimes deciduous, globose to ovoid, 2–3 mm in length, covered by a smooth green membrane of host tissue origin that becomes brown and ruptures irregularly to expose a granular, black to dark brown mass of spore balls; columella absent. Spore balls variable in shape and size, globose, subglobose, ovoid, elongate to irregular, 130–200 μm in diameter, dark brown, composed of up to several hundred spores, united firmly by fungal sterile cells and spore meshes and wings. Spore globose, ovoid to irregular, slightly polyhedral, (8–) 8.5–9.5 (–10) × (6–) 7–9 (–10) μm, usually with well-developed meshes and wings, subhyaline to pale yellowish-brown; wall 0.5 μm thick, smooth. Some of the sterile cells empty at maturity, thin-walled, with irregular meshes or wings on the spore surface when the spores separates; other sterile cells, globose, ovoid to irregular, slightly polyhedral, (8–) 8.5–9.5 (–10) × (6–) 7–9 (–10) μm, subhyaline to pale yellowish brown; wall 1–1.5 μm thick, smooth.

CHINA, Sichuan, Chengdu, on Echinochloacrus-galli, 15 Sept. 1989, L. Guo leg., HMAS 60130; Guangxi, on E.crus-galli, Oct. 2017, R.G. Shivas, M.D.E. Shivas & Y.-M. Li leg., HMAS 208025; Guangxi, on E.crus-galli, Oct. 2017, R.G. Shivas, M.D.E. Shivas & Y.-M. Li leg., HMAS 208026.

The teleomorph of Moesziomycesantarcticus was previously reported from Japan, on Echinochloacrus-galli (Tanaka et al. 2019). The current report from China, also on E.crus-galli, suggests that this smut fungus may be common in the teleomorphic stage, at least in East Asia.