United States, Texas, Travis, On SW side of a NW-SE stretch of Colorado River, ca. 0.6-0.7 airmiles W of US Rt. 183 bridges, ca. 0.8 airmiles E of Longhorn Dam. Montopolis Quadrangle.
30.24789 -97.70019
Occasional in marsh dominated by Zizaniopsis miliacea, on wet alluvial silt or clay in backwater slough just S of mouth of intermittent drainageway. Associates include Alternanthera philoxeroides, Cyperus ochraceus, Eupatorium serotinum, Ludwigia uruguayensis, Paspalum urvillei, Physostegia angustifolia, Polygonum lapathifolium, Schoenoplectus californicus, S. pungens, Verbena brasiliense, Zizaniopsis miliacea.