What could this yellow plant be (1 Viewer)

[kolibri2]

It would be very kind if somebody could ID this yellow plant for me. It may not look like it but it was on a very steep slope, It was not approachable - entry forbidden and physically impossible for me anyway. This was the best photo I could get.
Thanks in ant.

 

[kolibri2]

It would be very kind if somebody could ID this yellow plant for me. It may not look like it but it was on a very steep slope, It was not approachable - entry forbidden and physically impossible for me anyway. This was the best photo I could get.
Thanks in ant.

I have reduced two more photos which I hope will show a bit more detail

 

[THE_FERN]

Where, please

 

[kolibri2]

It would be very kind if somebody could ID this yellow plant for me. It may not look like it but it was on a very steep slope, It was not approachable - entry forbidden and physically impossible for me anyway. This was the best photo I could get.
Thanks in ant.

I should add that this was on 02-06-2022 in Düsseldorf, Germany. A stretch of water is separated from the Rhine by a steeply sloping damm and this is where boots are moored. This plant was on this damm - exposed and can be very sunny, warm, dry. Hope this helps.

 

[Xenospiza]

Based on the unique seeds, it is Woad (Isatis tinctoria, Färberwaid). Common along the Rhine.

 

[kolibri2]

Based on the unique seeds, it is Woad (Isatis tinctoria, Färberwaid). Common along the Rhine.

Thank you so much for your help. I didn't recognise it.
Patrick