A spice plant related to cumin with dark seeds and an edible root (Bunium bulbocastanum).
A spice plant with aromatic seeds (Nigella sativa).
A cultivated variety of cumin (Cuminum cyminum).
Bunium bulbocastanum (black cumin) of the Apiaceae.
Conopodium majus, a tuberous plant of the Apiaceae.
Certain rushpeas, particularly Hoffmannseggia glauca (syn. Hoffmannseggia densiflora) Indian rushpea, of the Fabaceae.
The pignut or hickory (Carya glabra of family Juglandaceae).
Hyptis suaveolens of the Lamiaceae.