Cotyledons
Kidney-shaped

Roots
Taproot

Stem
Erect, with short stiff hairs
Branched

True Leaves
Alternate
Stiff hairs present, toothed margins
Rough texture, lower leaves deeply lobed
at basal end, stalked
Upper leaves stalkless, more
coarsely toothed

Flowers
Four yellow petals clustered at
end of long stalks
Often has purplish veins
Long pods have constrictions
between each seed

Habitat
Cultivated fields, grain fields,
forages, waste areas

Note
Wild mustard similar except pods
split lengthwise and do not have
constrictions between the seeds
Roots have smell of radish