California skullcap
A charming perennial native to gravelly soils of low and mid elevation mountains of Northern California where it grows on the edge of woodlands and chaparral communities. Leaves are arranged oppositely on erect stems less than one foot tall. The very sweet, small, creamy-white snapdragon-like flowers occur in pairs at the leaf axils. Spreads by underground rootstocks to form colonies. In our nutritious water retentive soils has spread quite vigorously, in dryer leaner soils less so. Plant in full sun to light shade. Drought tolerant but would appreciate a little summer water.