Kyllinga brevifolia is a species of sedge known by several common names, including shortleaf spikesedge, green kyllinga, perennial greenhead sedge, and kyllinga weed.[2] It is native to tropical areas in the Americas but it can be found in warm regions around the world where it is an introduced species. This is a rhizomatous perennial herb growing one to several erect stems to heights up to about half a meter, often much shorter. It produces tiny inflorescences of a few spikelets each which in total are less than a centimeter long. Pollens are tiny, approximately 20-30 microns in size. It is sometimes a weed in wet areas such as cultivated land and irrigation ditches.
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