HYPP-A Unité de Malherbologie & Agronomie
Weed Science & Agronomy
INRA-Dijon

Bayer Code : cypes

Scientific name: Cyperus esculentus L.


Synonym(s) of Sc. name: Cyperus melinorhizus Delile, Pycreus esculentus (L.) Hayek.

Classification: Cyperaceae, Monocotyledonous

Common name: yellow nut-sedge

Synonym(s) of Common name:

Name per country: DE : Eßbares Zypergras ; ES : juncia avellanada ; FR : souchet comestible ; IT : zigolo dolce ; PT : juncinha ; EN : yellow nut-sedge ;

Biological type: Perennial with tubers


Seed snapshot Seed:

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Seedling:

- Plant propagates vegetatively (tubers....); establishment from seedling is rare.

- Shoot folded, 3-angled in section.

- Leaf blade 20-50 times longer than wide, leaf glabrous.

- Ligule absent, auricles absent.


Adult plant snapshotAdult plant snapshot Adult plant:

- Height: 20-60cm. Plant glabrous.

- Stem 3-angled. Rhizomes elongate, tuberous in some places.

- Leaves linear (4-8 mm broad), keeled. Ochreas present.

- Inflorescence : umbel shorter than 2-4 leaves; spikelets ginger-gold, 6-12 mm, spreading in spike -like racemes ; scales laxly imbricate, 3 stamens, 3 stigmas. Scales obtuse, no whitish margin.

- Fruits : achenes 3-angled 1/2 shorter than the scale.

- Plant cultivated for the tubers, big brown striped, with a floury, sweet flesh. Rare in crops but frequency increasing.

- Risk of confusion at seedling stage with Cyperus rotundus and Carex hirta .

- Biological type: perennial with tubers.

Mistake with: Cyperus rotundus , Carex hirta


Ecological profile (click on flags): Germany   Rare     Spain  Rare     France  Rare     Italy  Rare     Portugal  Present    

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