Comment 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 is 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). It contains chemicals of the class glucosinolates, including sinalbin.
praiseach thrá Reference Forey, P., agus Fitzsimons, C., Eolaí Póca - Biaphlandaí, Nic Mhaoláin, M. a d'aistrigh, An Gúm, Baile Átha Cliath, 1997, lch. 32. ;Faomhadh an téarma seo mar chuid de Thionscadal Lex
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Definition planda ilbhliantúil atá dúchasach do chóstaí Atlantacha na hEorpa a bhfuil fréamhacha méithe, duilleoga móra scothghorma cosúil le cabáiste agus bláthanna croischruthacha bána aige Reference Fiontar agus Scoil na Gaeilge, Ollscoil Chathair Bhaile Átha Cliath (DCU), bunaithe ar:'praiseach trá'. Hussey, M. Fréamh an Eolais. Coiscéim, Baile Átha Cliath, 2011.