Hognut or pignut can mean any of a number of unrelated plants:
* ''
Bunium bulbocastanum
''Bunium bulbocastanum'' is a plant species in the family Apiaceae.
It was once used as a root vegetable in parts of western Europe, and has been called great pignut or earthnut.
Growth
The plant is native to western Europe. It reaches about ...
'' (black cumin) or ''
Conopodium majus'' (kippernut) of the Apiaceae
*
rushpea
''Hoffmannseggia'' is a genus of flowering plants in the pea family, Fabaceae, known generally as rushpeas. These are pod-bearing herbs and subshrubs native to the Americas and southern Africa.
The generic name honors Johann Centurius, Count of ...
s, particularly ''
Hoffmannseggia glauca
''Hoffmannseggia glauca'' is a dicot found in the legume family, Fabaceae. Its common names include Indian rushpea, hog potato, and pig nut.
It is a California native which prefers alkaline desert flats, creosote bush communities, and distur ...
'' (Indian rushpea) and ''
Hoffmannseggia densiflora
''Hoffmannseggia'' is a genus of flowering plants in the pea family, Fabaceae, known generally as rushpeas. These are pod-bearing herbs and subshrubs native to the Americas and southern Africa.
The generic name honors Johann Centurius, Count of ...
'', of the Fabaceae
* ''
Carya glabra'' (pignut hickory) of the Juglandaceae
* ''
Hyptis suaveolens'' (chan) of the Lamiaceae
{{plant common name