| Erucastrum
gallicum is an alternate-leaved herbaceous plant, usually
20-50 cm tall. The leaves are deeply divided, the flowers
are pale yellow and the pinnatifid bract beneath each flower
(and fruit) is a very distinctive character. Flowering begins
in June and extends deep into the fall, especially along the
Lake Michigan beaches.
Erucastrum gallicum is most common
in the counties near Lake Michigan where it is found along
the beaches and less often in disturbed soils, especially
roadsides. It is probably more common as a weedy plant than
is indicated by the map.
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