compare Brassica rapa ssp. oleifera with
Raphanus raphanistrum
Brassica napus ssp. napus
Erysimum cheiranthoides
Sisymbrium officinale
Brassica rapa ssp. oleifera
Rybs i juni
Eva Ekeblad, 2000
More
comparison on the June pagebut this is something I still need to work on
both in terms of recognition
and of pagemaking