Leaves 0.8-2 cm wide. Involucral bracts 1-1.6(-1.9) cm wide. Spikelets (1 or)2-5 digitately arranged at raylets or tertiary raylets, 7-14 mm, 10-22-flowered. Glumes rusty brown on both surfaces, middle abaxially grayish green. Fl. and fr. Aug-Sep.

Cyperus diffusus var. latifolius appears to be well differentiated from other variants of this widespread paleotropical species.

● Wet places, grasslands. Guangdong.