(corn pink, corn campion, darnel, niche, tare). A member of the plant family
CARYOPHYLLACEAE. Annual herb with tall erect stems covered with dense white hairs
and long lance-shaped leaves covered with fine white hairs. Large solitary reddish-purple
flowers with pale streaks. Fruits are ovoid capsules opening by five slits to reveal
2024 black, pyramidal-shaped seeds, each covered with minute barbs. Commonly found
in cereal fields.
Animals most affected
Ingestion of seeds or flour made from contaminated
cereals (e.g. corn).
The seed contains an irritant poison, a saponoside
with haemolytic properties.
Toxic oral doses not well known:
LD in g seeds per kg body weight
considered to be the most sensitive
birds most resistant to the saponoside
salivation, haemorrhagic diarrhoea with
colic and abdominal pain;
tachycardia, tachypnoea, followed by