Nigella
L.
Annual herbs. Leaves 2 -
3-pinnatisect or decompound; lobes linear. Flowers often
with an involucre of 5 leaves, protandrous. Sepals 5, petaloid, shortly clawed. Petals
(honey leaves) 5 -
8, opposite to and smaller than sepals, 2-lipped, pocket-like, nectariferous. Stamens many. Carpels 5, connate up to apex; styles free. Fruit of 5 united
follicles, many-seeded.
Europe, Mediterranean regions and C. Asia; 20 species, one in India, usually cultivated, rarely as escape.
Europe, Mediterranean regions and C. Asia; 20 species, one in India, usually cultivated, rarely as escape.