How about this yellow-flowered fellow that has turned up in a few places in my garden, including in my rock wall. Can you name it?
Looks like something in the family Brassicaceae, the closest matches I can find being Camelina or Rorippa (but not definitely one of those).
I agree that it's in the Brassicaceae. It doesn't seem to have the distinct lower leaves of Barbarea vulgaris, although that species seems variable based on descriptions on the 'net. I notice that the stems and undersides of the leaves feel rough. I've looked through some NE US wildflower guides but can't find a match. Sometimes that means it's an escaped garden flower and sometimes a plant at the northern end of its range here in Virginia. (Sometimes it means I've overlooked the obvious.) Here's another (hopefully better) shot showing the simple, entire leaves.
