Terrestrial, annual, erect herb, up to 100 cm tall.
Taproots white or brown. Stem rounded or grooved, solid, hairy. Stipules absent.
Leaves simple, divided, alternate spiral, sessile or stalked, glabrous or hairy on both sides, margin coarsely dentate, apex acute, base acute, pinnately veined.
Flowers bisexual, grouped together in a terminal head of tubular flowers only, sessile, red or red-brown.
Fruit an achene with pappus
Propagation
by seed and runners fragments, hydrochorous.
Agricultural usage/ importance
Eaten raw or steamed as a vegetable; used as a medicine.
Control methods
Post-emergence application of paraquat (older plants must be wetted well) or diuron plus surfactant. 2, 4-D at 0.5 to 0.8 kg ha-1 or MCPA at 0.4 kg ha-1 applied within 20-30 days after emergence provides good control.
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