The humble pignut, also known as the kippernut, cipernut, arnut, jarnut, hawknut, earth chestnut, groundnut, earthnut and a dozen more names, is tiny. The largest I have seen was barely an inch in diameter, a prized monster of its clan.
Still, the plant that bears it, also known as the pignut, seems to do very well to produce anything approaching that size, as it is itself tiny for a member of the carrot family, with sparse, wispy leaves. Diminutive size has not stopped people from collecting them over the centuries, as they are both nutritious and of excellent