Collected
29 October 2008.
Texas, United States
Elevation: 167m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Slopes of borrow ditch running parallel to railroad tracks, clay.
Number of plants sampled: 80
Comment: Plant height: < 1 foot. Can be distinguished from N. lutea by larger calyx and increased number of leaflets per pinna.