<![CDATA[Image RSS Feed for Image Collection 1163 - purple nutsedge (Cyperus rotundus) - Selected Images only]]> http://www.ipmimages.org/collections/viewcollection.cfm?id=1163 Appearance

Cyperus rotundus is a perennial which rarely reproduces by seed but extensively reproduces by rhizomes which initially are white and fleshy with scale leaves, later becoming ligneous or "wiry."

Foliage

The leaves are three-ranked, shiny, dark green, and corrugated in cross section. They are 0.24-0.39 in. (6-10 mm) wide and 3.9-13.8 in. (10-35 cm) long. The rachis, which grows through the center of the leaf bundle, is erect, simple, smooth, triangular in cross section, and 3.9-23.6 in. (10-60 cm) long.

Flowers

Near the ends are clusters of narrow spikelets, 0.3-1 in. (0.8-2.5 cm) long and 0.07 in. (2 mm) wide, 10- to 40-flowered, acute and compressed with a red, reddish-brown, or purplish-brown color.

Fruit

Fruits are 3 angled achene.

Ecological Threat

Infests crop production areas in tropical and temperate climates, causing large losses in crop yields.

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Fri, 29 Mar 2024 05:16:14 -0400 Fri, 29 Mar 2024 05:16:14 -0400 http://Images.bugwood.org/ <![CDATA[purple nutsedge Cyperus rotundus]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=1117024 purple nutsedge Cyperus rotundus]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=1117024 <![CDATA[purple nutsedge Cyperus rotundus]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=1117025 purple nutsedge Cyperus rotundus]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=1117025 <![CDATA[purple nutsedge Cyperus rotundus]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=1117026 purple nutsedge Cyperus rotundus]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=1117026 <![CDATA[purple nutsedge Cyperus rotundus]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=1117022 purple nutsedge Cyperus rotundus]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=1117022 <![CDATA[purple nutsedge Cyperus rotundus]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=1624072 purple nutsedge Cyperus rotundus]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=1624072 <![CDATA[purple nutsedge Cyperus rotundus]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=1120314 purple nutsedge Cyperus rotundus]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=1120314 <![CDATA[purple nutsedge Cyperus rotundus]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5374954 purple nutsedge Cyperus rotundus]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5374954 <![CDATA[purple nutsedge Cyperus rotundus]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5342060 purple nutsedge Cyperus rotundus]]> http://www.ipmimages.org/browse/detail.cfm?imgnum=5342060