Annual grassland and surrounding shoreline west side of "Peninsula" area of Lake Folsom State Recreation area. Relevé on slope approximately 25 m W of end point of nature loop trail. On convex ridgeline. Swales to N and S have higher cover of Juncus balticus and Vulpia. Triphysaria eriantha subsp. eriantha and Lupinus bicolor stands numerous in grass border of lake shore.; Relevé in grassland boundary of lake shoreline. Area experiences periodic inundation.