Black Buckwheat Seeds refer to a group of food seeds that are consumed as cereal grains but do not grow on grasses. These common pseudocereals include quinoa and amaranth. Despite its name, buckwheat is thus gluten-free and is not related to wheat. Black Buckwheat Seeds are utilized as food for humans in the form of flour. The flour is generally dark coloured due to the presence of hull fragments not removed during the milling process.