The Acidless Oranges
This type of orange has very little commercial value and production and consumption is limited to areas in South America and the Middle East. From the UC Riverside collection:
Lima Acidless Sweet Orange
Source: Received as budwood from Col. J. de Tieve e Argollo, Agua Comprida, Bahia- thru USDA, 1916.
Parentage/origins: Parents unknown.
Description: “Fruit medium-small, spherical to subglobose; seeds comparatively few. Rind medium-thick; surface slightly rugose; color light orange. Flesh color light yellow; tender and juicy; flavor insipid because of lack of acid. Very early in maturity. Lima is said to be the most important of the three non-acid orange varieties grown in Brazil, where this fruit is so highly appreciated that it currently constitutes about 10 per cent of the plantings. It is accorded particular dietary values for adults and is reported to be especially popular with children.”
Orange of Heaven acidless sweet orange
Rio Farms Vaniglia acidless sweet orange
Vaniglia Sanguigno acidless sweet orange