According to Waibel (1953), this variety was found in 1927 on the place of O. F. Marrs, Donna, Texas, where it is said to have occurred as a limb sport in a group of navel orange trees obtained from California. Fruit medium-large, round to slightly oblate; moderately seedy (depending on pollination). Well-colored under favorable conditions. Rind medium-thick, and surface smooth and finely pitted. Flesh well-colored; juicy, lacking in acid; flavor sweet. Holds well on tree with little loss in quality. Earliest in legal maturity because of low acidity, but for better juice content and quality should be left on tree somewhat later. Tree moderately vigorous, precocious, and prolific. Marked tendency to bear fruit in clusters. Smaller than most other varieties, presumably because of early and heavy bearing.