Collards x Turnip Cross?
I noticed a plant growing in the weeds behind my compost heap that looks sort of like a collard plant, but has an obvious large white root sticking out of the soil like a turnip. The leaves are light green with white ribs, slightly hairy, about 2 feet long and spear shaped and taste like collards with a hint of turnip green bitterness.
I grow both collards and turnips in my garden and have wild black mustard that grows just about everywhere else as a weed. Those are the only brassicas around, I believe.
The collards that I grow are blue-green in color and do not have a main tap root, and the turnips have small light green leaves with lots of large hairs and make small egg-sized roots.
I was thinking that maybe the collards and turnips crossed somehow. Might this be possible? Or maybe this is something wild that I've never seen before? Any thoughts?