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Nigella

See list of 2 species in this genus
  • 1a. Inflorescence, a solitary flower, subtended by an involucre composed of a whorl of bracts that are pinnately dissected into filiform segments; capsule smooth on outer surface, with 10 locules; ultimate segments of upper leaves linear
  • 1b. Inflorescence not subtended by an involucre; capsule tuberculate on outer surface, with 5 locules; ultimate segments of upper leaves broad-linear to narrow-lanceolate

 Show photos of:   Each photo represents one species in this genus.