Join Don Thomas for a four mile walk to see the one of the more accessible populations of the endemic Western leatherwood (Dirca occidentalis). We may also see some early emerging woodland plants in flower. There will be some moderate but slow-paced hill climbing, with a stop for lunch. We will take the Hamm’s Gulch trail to see the Dirca near the bench. Along the way, we will walk through a variety of plant communities, including meadows, oak woodland, mixed evergreen forest, redwood forest and riparian woodland.