1868 (Vilmorin). "Plant of free vigorous growth, pods 6 to 8 inches long, twisted, of a deeppurplish blue colour. A very heavy cropper; very striking on account of the colour of its pods. A good edible-podded variety and very tender. The pods lose the purple colour on being cooked and become as green as others.
1868 (Vilmorin). "Plant of free vigorous growth, pods 6 to 8 inches long, twisted, of a deeppurplish blue colour. A very heavy cropper; very striking on account of the colour of its pods. A good edible-podded variety and very tender. The pods lose the purple colour on being cooked and become as green as others. Proceedings of the RHS 1895.
1868 (Vilmorin). "Plant of free vigorous growth, pods 6 to 8 inches long, twisted, of a deeppurplish blue colour. A very heavy cropper; very striking on account of the colour of its pods. A good edible-podded variety and very tender. The pods lose the purple colour on being cooked and become as green as others.