The plants that grow on this 2,400-acre island amid a sea of city—including these four endemic manzanita species—help make San Bruno Mountain a world biological hotspot.

San Bruno Mountain: An Ark of Diversity
January 3, 2021 •
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The plants that grow on this 2,400-acre island amid a sea of city—including these four endemic manzanita species—help make San Bruno Mountain a world biological hotspot.