Nigella

Nigella is a genus of 18 species of annual plants in the family Ranunculaceae, native to southern Europe, north Africa, south and southwest Asia. Common names applied to members of this genus are nigella, devil-in-a-bush or love-in-a-mist. The species grow to 20–90 cm tall, with finely divided leaves; the leaf segments are narrowly linear to threadlike. The flowers are white, yellow, pink, pale blue or pale purple, with five to 10 petals. The fruit is a capsule composed of several united follicles, each containing numerous seeds; in some species (e.g. Nigella damascena), the capsule is large and inflated. The seeds of Nigella sativa, known as kalonji, black cumin, black onion seed, onion seed or just nigella, are used as a spice in Indian, Middle Eastern and Polish cuisines. Several species are grown as ornamental plants in gardens. Nigella damascena has been grown in English cottage gardens since Elizabethan times, commonly called love-in-a-mist. Nigella hispanica is a taller species with larger blue flowers, red stamens, and grey leaves. Nigella seeds are self-sowing if the seed pods are left to mature.