United States, California, Butte, On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. T17N R02E S17 NW1/4
Stems from plants 4 feet tall, on dry dark disturbed soil, on the sides of the dirt road. Uncommon, only two large plants seen, perhaps in seed planted to stabilize the banks. Flowers yellow. Freshwater marsh.