Weed Science & Agronomy
INRA-Dijon
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Unité de Malherbologie & Agronomie Weed Science & Agronomy INRA-Dijon |
Bayer Code : cypes
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
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- 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.
- 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):
Rare
Rare
Rare
Rare
Present
