(L.) Dumort.
A small, annual, yellow-flowerered crucifer which grows as a casual in disturbed waste ground, arable fields and on tips. It was once a common contaminant of cereal and clover seed that had been imported from Europe, but now it is more likely to arise from birdseed. It is much less common currently than it was in the past and there are few recent records from Wales and only one record from West Glamorgan.
Neophyte
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