- Pronunciation: sigh-PUR-us
- Common Name: Rice Flatsedge
- Type: Sedge, tufted Annual Herb, or occasionally Perennial
- Family: Cyperaceae
- Size: Stem 10—70—cm tall.
- Flowers: Inflorescence: Simple or Compound Umbel composed of numerous erect-spreading 3—10—mm—long flattened spikelets.
- Fruit: Fruit: three-angled, 1.0—1.5—mm Nut with slightly concave sides, and shiny dark brown to black.
- Vegetation Type: Freshwater wetlands
- Species List: Cooroy Mill Site, SRR, Cranks Creek,
Cultural Notes
Cosmopolitan Annual and a Weed in Asia in rice paddys.
Identification Notes
Fibrous roots, 15—75 yellowish red roots; Stem: sharply 3 angled, tufted, smooth, 5—80—cm high. Leaf: Basal, rough to touch in upper part, Linear, Flaccid, with gradually tapering point and 3—8—mm wide; Sheath reddish or purplish brown, enveloping the Stem at base. Identifying features - Cyperus sp Culms: Triangular to cylindrical. Inflorescence: Terminal, Head-like or Umbel-like, Simple or Compound rays. Involucral Bracts: Under each Ray, mostly Leaf-like. Leaves: Grass-like or Reduced to sheathing scales.
