Serpentine is less than 2% of the land area of California but accounts for about 15% of the rare plants.
This annual outing showcases several of this Marin County Open Space Preserve’s rare plants, including the Tiburon mariposa lily (Calochortus tiburonensis).
Kent Pump Road offers a beautiful, gentle, and biodiverse hike through the Lagunitas Creek Watershed and the upper reaches of Kent Lake.
The Old Stage Road passes through mixed evergreen forest into a chaparral area that alternates between serpentine rock and greywacke sandstone with sharp contrast between the different rock and soil types.
This field trip is an easy walk with East Bay, Marin, and San Francisco views. We will walk the Saddle and Bog Trails.
On this 3.5-mile field trip we will meander up to Hidden Lake, a vernal pool on Mt. Burdell.