It’s the rarest oak species in the U.S., it’s endangered, and 93 percent live right here in San Diego. In the 1840s German doctor George Engelmann, studying plants along the U.S.-Mexico border, noticed some distinctions …
January 3, 2024
Posted January 3, 2024
It’s the rarest oak species in the U.S., it’s endangered, and 93 percent live right here in San Diego. In the 1840s German doctor George Engelmann, studying plants along the U.S.-Mexico border, noticed some distinctions …