The name Umatilla (Um-a-til'lia) has been selected for this new fruit, after the town of that name in Lake County, Fla. Crown compact or dense, not weeping. First-year twig surface glabrous; second- or third-year twig surface striate; thorns absent or not persistent; prickles absent or not persistent. Petiole glabrous, length short; wings absent, if present, narrow, adjoining the blade. Leaflets one, margin bluntly toothed, shade leaflet blades weakly conduplicate, sun leaflet blades flat, weakly or strongly conduplicate. Scent of crushed leaflets mandarin-like. Fruit broader than long; rind yellow (7-10), yellow-orange (11), or orange (12); rind texture smooth (1-3) or slightly rough (4-5); firmness leathery; navel absent; flesh orange; taste acidic-sweet. Fruit medium-large, reddish-orange, and broadly oblate. Moderately seedy with smooth, medium-thick, moderately adherent rind and hollow axis. Flesh orange-colored; tender, very juicy; flavor rich but acid. Seeds monoembryonic and cotyledons green. Medium-late maturity. Tree slow growing, spreading, with considerable resemblance to satsuma; productive.