Cyperus sphacelatus
[Roadside Flatsedge]

photo
DSC08655 (08)
photo
DSC08654 (08)
photo
DSC08656 (08)
photo
DSC08657 (08)

Close-up view:

photo
DSC04094 (14)
photo
DSC04071 (14)

The pictures below was from a plant that grew spontaneously in my pot, in which I had did a dissection to take a closer look at its seeds. The distance between two lines in the ruler below is 1 millimetre. The achene (dry fruit) is described as "reddish brown to dark brown".

photo
DSC05154 (15)
photo
DSC05176 (15)
photo
DSC05178 (15)
photo
DSC05189 (15)
photo
DSC05185 (15)
photo
DSC05179 (15)
photo
DSC05165 (15)

Online Resources:

| Flora of North America | Pacific Island Ecosystems at Risk (PIER) | Plants of Saint Lucia |