Glossostigma elatinoides, also known as small mud-mat, is a flowering plant in the family Phrymaceae and grows in eastern states of Australia.

Glossostigma elatinoides is a terrestrial or aquatic, perennial, mat-forming herb.

The leaves are green, occasionally sparsely hairy, 6–20 mm (0.24–0.79 in) long, 1–3 mm (0.039–0.118 in) wide, elliptic to egg-shaped, base narrows abruptly or gradually into the 2–10 mm (0.079–0.394 in) long, sometimes whitish petiole and a distinct mid vein on lower surface.

[5] In 1853 Joseph Dalton Hooker changed the name to Glossostigma elatinoides and the description was published in The botany of the Antarctic voyage of H.M. discovery ships Erebus and Terror.

[6][7] Small mud-mat grows in wet situations on river flats, near swamps and dams in New South Wales, Victoria, South Australia, Tasmania and the Australian Capital Territory.