Plumbago is a genus of 10-20 species of flowering plants in the family Plumbaginaceae, native to warm temperate to tropical regions of the world. Common names include plumbago and leadwort (names which are also shared by the genus Ceratostigma. The generic name, derived from the Latin words plumbum (“lead”) and agere (“to resemble”), was first used by Pliny the Elder for a plant known as (molybdaina) to Pedanius Dioscorides. This may have referred to its lead-blue flower colour, the ability of the sap to create lead-colored stains on skin, or Pliny’s belief that the plant was a cure for lead poisoning.
The species include herbaceous plants and shrubs growing to 0.5–2 m (1.6–6.6 ft) tall. The leaves are spirally arranged, simple, entire, 0.5–12 cm (0.20–4.72 in) long, with a tapered base and often with a hairy margin. The flowers are white, blue, purple, red, or pink, with a tubular corolla with five petal-like lobes; they are produced in racemes.