Fimbristylis cymosa

Fimbristylis cymosa, commonly known as tropical fimbry, or St. John's sedge, is a sedge of the family Cyperaceae that is native to Australia.

The rhizomatous perennial grass-like or herb sedge typically grows to a height of 0.25 to 0.8 m. It blooms between February and September and produces brown flowers.

In Western Australia it is found near the coast, on dunes and behind mangroves in the Kimberley region where it grows in sandy-clay alluvium around basalt or sandstone rocks.