Did you know there are three 'Pignuts' in the British Isles?!
The first is Conopodium majus aka. Pignut also;
Kippernut :eek:, Arnut, Jarnut, Hawknut, Earth Chestnut, Groundnut, and Earthnut and even Saint Anthony's nut !! :)
It has been discussed and described here lots of time...