A large patch, full of bright red rose hips. A California Buckeye (Aesculus californica) is at the left -- still green! is that a willow (Salix sp.) at the upper right? There must still be abundant water nearby for these plants to be so green. Jasper Ridge Biological Preserve, beyond the end of the Irene Brown Trail (Trail b). 8/21/2021, 8:43 am.