14 September 2011.
Oklahoma, United States
Locality: Oklahoma: Atoka County, along US Hwy. 69, between highway and railroad and along Mitchell Road on east side of railroad, in area extending from 2.5 to 3.5 miles NE of Atoka.
Coordinates: 34.4106, -96.1072
(Map it)
Comment: Numerous plants in area extending from 2.5 to 3.5 miles NE of Atoka; seed coll. throughout population.