Russian kale

== English == === Noun === Russian kale (uncountable) A kale, of variety Brassica oleracea var. viridis, known for its hardiness, introduced into the US in the 19th century. ==== Derived terms ==== Red Russian kale === References === “Russian kale”, in OneLook Dictionary Search. Brassica oleracea on Wikipedia.Wikipedia Brassica oleracea var. viridis on Wikispecies.Wikispecies Category:Brassica oleracea var. viridis on Wikimedia Commons.Wikimedia Commons