A South American plant related to wood sorrel, long cultivated in Peru for its edible tubers.
Oxalis tuberosa, family Oxalidaceae‘The potato was also of great importance and, with its related tubers oca and ulluco, provided crops which were protected from the frost, hail, and storms.’
- ‘Cultivated oca has an important place in the diets and farming systems of rural communities in the Andean highlands.’
- ‘Several families were harvesting bright yellow oca (a sweet potato).’
Early 17th century from American Spanish, from Quechua ócca.
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