Calyx deeply divided, the tubular corolla with 5 very small reflexed lobes, usually differently colored from the tube. — About 6 species. The best species is C. retorta, which has a unique appearance in the garden, and is strongly recommended for more general cult. It is a hardy annual of easy cult. | Calyx deeply divided, the tubular corolla with 5 very small reflexed lobes, usually differently colored from the tube. — About 6 species. The best species is C. retorta, which has a unique appearance in the garden, and is strongly recommended for more general cult. It is a hardy annual of easy cult. |