stoutcob's picture


Observed: 3rd August 2013 By: stoutcobstoutcob’s reputation in Plantsstoutcob’s reputation in Plantsstoutcob’s reputation in Plantsstoutcob’s reputation in Plants

Two metres tall. Yellow flowers on tangled stems. Upper leaves lanceolate, lower leaves lobed.

Species interactions

No interactions present.

Species with which Black Mustard (Brassica nigra) interacts


AlanS's picture

Not Hirschfeldia

Vegetatively this looks like Brassica nigra rather than Hirshfeldia, so I have copied the photograph into Photoshop and blown it up on my giant hi-res monitor.

I see no cases where there are seeds in the beaks. What might cause confusion is that the stigmas are still conspicuous at the tips of the beaks of these young fruits.

Hirschfeldia, once only in the south of Britain, has spread throughout the country - I have even found it on the north coast of Scotland at Bettyhill - and very often it has been wrongly named as Brassica nigra.

In this case, though, I am sure that this really is B. nigra.