Morton Citrange

UCR identifies Morton citrange as Poncirus trifoliata × Citrus sinensis, with the cultivars unspecified. Its record for CRC 1463 / PI 539811 says the Riverside collection received budwood from W. T. Swingle, USDA, in June 1924.^⁠[1]At Riverside, UCR lists ripening from October to November. A historical fruit description quoted by the Hardy Citrus blog describes orange-like fruit that is slightly lighter in color, with slight indications of lobing, and firm segment membranes that allow the pulp to be spooned out; the quotation is attributed to an older book and is not tied to CRC 1463.^{⁠[1]⁠[12]}One Mulberries scorecard rates Morton at sweetness 7/10, sourness 6.5/10 and bitterness 2/10 after converting the reversed sourness and bitterness scales. These are ratings of one tasting, not cultivar-wide measurements. The accompanying video identifies the same fruit as the last one on Stan McKenzie’s tree and reports 247 g, 11.5 °Brix and a pH test-strip reading around 3.^{⁠[10]⁠[13]}Separately, another grower reports a possibly underripe first fruit ripened in a heated Zone 7a greenhouse.^⁠[14]