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 ==Kohl/kale== 
 Thank you for your efforts to deepen readers' semantic understanding of kale and its naming history.  What's unclear in your description (I think) is how members of the genus (Brassicaceae) could include green leafy vegetables plants in the mustard family named in some continuity with cruciferous vegetables: round cabbages and other plants, such as (cabbage, cauliflower, broccoli, Brussels sprouts, some seeds, etc.).  The Brassica article says: 

 Crops from this genus are sometimes called cole cropsderived from the Latin caulis, meaning stem or cabbage. 

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