United States, Texas, Brazoria, SE of Clute on highway 332, about 0.2 mi N of 332 on county road 434, then about 100 meters west of 434 across drainage ditch and in dump area; also along fencerow on east side of road.
Wetland clay prairie; sticky clay soil. Locally frequent to about 2 meters tall; voucher for chloroplast ultrastructure studies of Dr. Behnke.