Plants of the San Marcos Foothills Preserve

Juglans californica (Southern Calif. Black Walnut)

Uncommon native tree known from only one location on the Preserve (lower Atascadero Creek). Flowers are yellow. Blooms in spring. Plants of this species on the Preserve may by hybrids of English Walnut (Juglans regia).

Juglans californica (Southern California Black Walnut). Pictured in summer.

Juglans californica (Southern California Black Walnut). Pictured in summer.