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Family - Indian Society of Weed Science

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Habit:<br />

Stem:<br />

Leaves:<br />

Flowers:<br />

Fruits:<br />

Conyza bonariensis (L.) Cronquist.<br />

Erect perennial, 20-75 cm tall.<br />

Common Name : Asthmaweed<br />

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

Erect with stiff hairs, branching at the base,<br />

decreasing upwards.<br />

Narrow, lanceolate, grey to green color, 2-6 cm<br />

long, coarsely toothed and covered with fine<br />

hairs; upper leaves are smaller and linear.<br />

Inflorescence much branched; capitulum is<br />

greater than 2 mm in diameter.<br />

Cypsela linear shaped, 1.5 mm long, straw<br />

colored, covered in hairs with 16-20, noticeably<br />

longer, at the top that are white or pink.<br />

<strong>Weed</strong> ID Manual 99

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