It’s the mother tree, the tree from which all navel oranges in the United States trace their roots. Planted in 1873 by a Riverside woman, the parent Washington navel orange tree has lasted 148 years ...

Driving west Friday morning on Riverside’s Arlington Avenue, I see the two-story boxy shape, a peak at the top, from a block away. Momentarily I think it’s a church. Then I recognize what I’m seeing.

It’s the mother tree, the tree from which all navel oranges in the United States trace their roots. Planted in 1873 by a Riverside woman, the parent Washington navel orange tree has lasted 148 years ...