13 September 2015.
Arizona, United States
Locality: along the Verde River, vicinity of Deadhorse Lake, north of Cottonwood, Yavapi county
Coordinates: 34.7506, -112.0170
(Map it)
Elevation: 1005m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Riparian forest and wetland, with deep soil from alluvium with Populus, Salix, Baccharis, Typha, and Xanthium.
Comment: pop size 100; plants up to 2.0 m tall
Collector(s):