Herbaceous plants of the borage order, usually vigorous, and with handsome blue flowers. One of the handsomest spring flowers is Symphytum caucasicum, and it is also one of the easiest things to naturalise, running about with the greatest freedom in shrubby or any wild places. Coarse kinds, like S. asperrimum (unfit for garden culture), thrive apace among the largest plants in wild places, and there look quite beautiful when in flower.