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Family - Indian Society of Weed Science

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Habit:<br />

Stem:<br />

Leaves:<br />

Flowers:<br />

Fruits:<br />

Common Name : Bold-leaf launaeae<br />

<strong>Family</strong> : Asteraceae<br />

Perennial herb with a taproot and <strong>of</strong>ten shoot<br />

bearing lateral roots, up to 40-50 cm high.<br />

A short woody caudex.<br />

Launaea nudicaulis (Linn.) Hook. f.<br />

One or a few basal leaf rosettes, each usually<br />

with several procumbent to ascending-erect,<br />

divaricately branched, occasionally straggling<br />

flowering stems; Caudical leaves 2-12 x 0.5-3.5<br />

cm, rather variable, narrowly spathulate in<br />

outline, sinuate-dentate to irregularly<br />

pinnatifid to mostly runcinate, with acute apex<br />

and acute segments, margin sinuate-dentate<br />

and denticulate.<br />

Inflorescence <strong>of</strong> a flowering stem ending in a<br />

single capitulum and with a variable number<br />

<strong>of</strong> flowering branches; peduncles 2-15 mm<br />

long, wiry, spreading-erect; flowers usually<br />

yellow.<br />

Achenes 2.6-5.5 x 0.5-1.0 mm, heteromorphic,<br />

with 4 main ribs, smooth to somewhat<br />

transversely wrinkled, pale.<br />

<strong>Weed</strong> ID Manual 197

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