Alkanna

alkanna a red or brown dye extracted from the roots of plants of the borage family, Alkanna tinctoria and A. officinalis, which has been used both for fabrics and as a food colouring since the time of the early Arab civilizations. Its name comes from the Arabic al hinnā, meaning ‘the dye’ (not to be confused with the red dye commonly called henna, which comes from plants of the genus Lawsonia).