▁of ▁Magn olia ▁Street ▁and ▁Ar ling ton ▁Street , ▁R ivers ide . ▁The ▁Bah ia , ▁Brazil , ▁Washington ▁nav el ▁orange ▁was ▁brought ▁to ▁the ▁United ▁States ▁by ▁the ▁U . S . ▁Department ▁of ▁Agricult ure ▁in ▁ 1 8 7 0 . ▁The ▁Department ▁of ▁Agricult ure ▁imported ▁twelve ▁trees ; ▁from ▁these ▁trees , ▁some ▁bud s ▁were ▁gra ft ed ▁on ▁to ▁California ▁sweet ▁orange ▁trees . ▁The ▁Washington ▁N avel ▁Orange ▁is ▁also ▁called ▁California ▁N avel ▁Orange . ▁ ▁The ▁nav el ▁orange ▁is ▁a ▁mut ation ▁of ▁regular ▁sweet ▁orange . ▁This ▁mut ated ▁orange ▁was ▁discovered ▁in ▁a ▁monaster y ▁orch ard ▁in ▁Brazil ▁in ▁ 1 8 2 0 . ▁In ▁ 1 8 7 0 ▁a ▁cutting ▁from ▁the ▁nav el ▁orange ▁was ▁sent ▁to ▁Washington , ▁D . C ., ▁thus ▁was ▁called ▁the ▁Washington ▁nav el ▁orange . ▁The ▁name ▁" n avel ▁orange " ▁is ▁from ▁the ▁mut ation ▁at ▁the ▁bottom ▁bl oss om ▁end ▁of ▁the ▁orange . ▁The ▁ ▁bottom ▁of ▁the ▁orange ▁has ▁a ▁de pression ▁looks ▁somewhat ▁like ▁a ▁human ▁bel ly ▁button . ▁The ▁mut ation ▁gives ▁the ▁nav el ▁orange ▁no ▁se eds . ▁The ▁Washington ▁nav el ▁or anges ▁were ▁sh ipped ▁all ▁over ▁the ▁United ▁States . ▁As ▁or anges ▁cannot ▁with stand ▁free zing ▁weather , ▁the ▁climate ▁of ▁Southern ▁California ▁is ▁good ▁for ▁the ▁Californ ian ▁cit rus ▁industry ▁and ▁the ▁nav el ▁orange . ▁