Canola refers to both an edible oil (also known as canola oil) produced from the seed of any of several varieties of the rape plant, and to those plants, namely a cultivar of either rapeseed (Brassica napus L.) or field mustard/turnip rape (Brassica rapa subsp. oleifera, syn. B. campestris L.). Consumption of the oil is common and, unlike rapeseed, does not cause harm in humans and livestock.