Everything about Charlock totally explained
Sinapis arvensis is a plant from the family
Brassicaceae, it's commonly known as wild mustard or charlock. A native of Europe, it has also become naturalized throughout much of North America.
It is an
annual or winter annual up to 1 m tall. The stems are erect with coarse spreading hairs near the base. The basal leaves are
pinnatifid to
dentate. The cauline leaves are much reduced and are short petiolate to sessile but not auriculate-clasping. The inflorescence is a raceme made up of yellow flowers having four petals. The fruit is a
silique 3-5 cm long with a beak 1-2 cm long that's flattened-quadrangular. The valves of the silique are glabrous or rarely bristly, three to five nerved. The seeds are smooth 1-1.5 mm in diameter.
Wild mustard is highly invasive and has been reported to be poisonous to livestock. It is eaten by the
caterpillars of some
Lepidoptera, such as the
Small White (
Pieris rapae).
Further Information
Get more info on 'Charlock'.
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