Cyperus flaccidus
Glumes minutely cellulose-reticulate near the keel, yellowish-green, 1-nerved, with short acute spreading or recurved tips; keel acute. Spikelets ovate changing to oblong or oblong-linear, evenly and sharply serrate, up to 20-flowered. Low growing tufted perennial or apparently annual. Coast and Cumberland Plain. Damp pasture