In article , Alan Gould
writes
In article , Kay Easton
writes
Quite a few. You might remember more than one discussion in urg about
'collards'

But wasn't that more about what plants popular names applied to? - a
well known source of confusion, and nothing to do with taxonomy as such
Do you have the Latin name for collards?

Brassica oleracea (var) acephala

Are you saying that there are plants within the brassicas which should
not be? Or conversely, that plants not at present considered to be
brassicas which you believe to be brassicas? Or are you making a plea
for common names to be more nearly aligned with botanical
classification?
Any new classification should hopefully clarify all of those points.

The bounds of genera in Brassicaceae is considered a problem, Brassica
amongst them, but I'm not aware of any doubts about the placement of B.
oleracea, B. napus and their amphiploid hybrid B. rapa.
--
Stewart Robert Hinsley