23 September 1996.
Iowa, United States
Locality: About 2 miles north of Oskaloosa on Highway 163 near mile marker 55, Section 10, Lincoln Township, T75N, R16W, Oskaloosa Quad, Mahaska County.
Coordinates: 41.3000, -92.7167
(Map it)
Environment description: Construction/waste site.
Number of plants sampled: 100
Comment: Pop 16. Mixed with Amaranthus retroflexus and Chenopodiums. 3 A. tuberculatus pressed.
Collector(s):