25 November 1985.
Sinaloa, Mexico
Locality: Growing on level site in hilly region in sandy soil, roadside ditch next to Sorghum field, near Guamuchil, 8km W on road to Mocorito, Rio Mocorito region, Sinaloa.
Coordinates: 25.4167, -108.0000
(Map it)
Elevation: 50m.