Cyperus rotundus L.
Nutgrass (Cyperus rotundus) is a long-lived, perennial sedge that is native to Africa, Europe, and southern Asia. It was introduced to New Zealand as a contaminant of crop seed and soil and was first recorded in the wild (naturalised) in 1873. The plant grows from underground rhizomes and tubers and has narrow, grass-like leaves arising from the base. It flowers from December to April, producing umbrella-like clusters of reddish-brown spikelets, which develop into small seeds. It tolerates drought, heat and a wide range of soil types. It reproduces by seed and vegetatively from rhizomes and tubers. Seeds are dispersed by water, contaminated soil and human activities. Rhizomes and tubers are spread by soil movement, cultivation and other human activities. Even small tuber fragments readily produce new plants.
This description has been automatically generated using information from trusted sources. If you notice any errors or omissions, please let us know.