Umbrella Sedge

The umbrella sedge is a an annual herbaceous perennial with bluntly 3-sided, smooth stems. Flowers are in light yellow - green clusters.  Full grown plants are about 25-90 cm tall (from ground to seed head); leaves are 4-8 mm wide and relatively smooth-edged.  It has four to seven leaflike spreading bracts that originate at the top of stem, below the inflorescence.  Spikelet scales barely overlap adjacent scales on the same side of the axis.  Frits are about 1/8 inch long.  The stems are triangular in cross-section. They reproduce by seeds and by rhizomes.

Habitat include peaty-mucky flats and wet sands.