14 September 2015.
Arizona, United States
Locality: along W Winslow Industrial Spur, near exit 252 from I-40, west side of Winslow, Navajo county
Coordinates: 35.0385, -110.7351
(Map it)
Elevation: 1515m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Weedy vacant lot and roadside ditch, with deep soil from sandstone with Salsola and Grindelia.
Comment: pop size 10000; plants up to 2.0 m tall
Collector(s):