Brassica oleracea
Although two different species, the Mishnah ("Kil'ayim" 1:3) permits planting together turnips ("Brassica rapa" subsp. "rapa") () with rape ("Brassica napus") (). Likewise, cauliflower ("Brassica oleracea botrytis") () and kohlrabi ("Brassica var. caulorapa") (), although different species, are permitted to be planted together. Maimonides, in his commentary on the same Mishnah, explained the word "karūb" as having the Judeo-Arabic connotation of כרנב, meaning either cabbage ("Brassica oleracea") or kale ("Brassica oleracea var. acephala").