Here also are other plants with edible roots - the oca (Oxalis tuberosa), ulluca (Ullucus tuberosus), massua (Tropceolum tuberosum), and learc6 (Polymnia sonchifolia).
In the sierra region, wheat, barley, oats, quinua (Chenopodium quinoa), alfalfa, Indian corn, oca (Oxalis tuberosa) and potatoes are the principal products.
Above the sea, the indigenous species include the potato, maize, oca (Oxalis tuberosa), and quinua (Chenopodium quinoa), and the exotic species, wheat, barley, oats, alfalfa (Medicago saliva), and most of the fruits and vegetables of the northern temperate zone.
Among the more important productions, the potato, oca (Oxalis tuberosa), quinoa (Chenopodium quinoa) and some coarse grasses characterize the puna region, while barley, an exotic, is widely grown for fodder.
Between the 5th and 6th parallels the range divides into two branches, the eastern passing into Venezuela, where it is called the Cordillera de Merida, and the northern continuing north and north-east as the Sierra de Perija and the Sierra de Oca, to terminate at the north-eastern extremity of the Goajira peninsula.
When the kingdom was at its height it included all the modern province of the name; the northern slope of the western Pyrenees called by the Spaniards the "Ultra-puertos" or country beyond the passes, and now known as French Navarre; the Basque provinces; the Bureba, the valley between the Basque Mountains and the Montes de Oca to the north of Burgos; the Rioja and Tarazona in the upper valley of the Ebro.