United States, California, Siskiyou, Elk Spring 7.5' USGS quad. Along Mud Creek near Mt. Shasta. Growing in wet sand along the creek. Associated species: Erythranthe primuloides, Erythranthe guttata, Chamerion angustifolium, Juncus bolanderi, Epilobium glaberrimum ssp. fastigiatum, Anaphalis margaritacea.
41.34025 -122.11413 NAD27
41.34025, -122.11413; NAD27; T.40N, R.02W, S.05, NW 1/4 of the SW 1/4, MDBM