06 October 1993.
Guanajuato, Mexico
Locality: Ca. 200 m W Guanajuato-Queretaro border on hwy fm San Miguel Allende to Queretaro. Near Hda. Las Mojas.
Coordinates: 20.8500, -100.5167
(Map it)
Elevation: 2180m.
Environment description: Limestone outcropping. Assoc. with Ipomoea, Eupatorium, Tagetes, Cuphea aequipetala.
Number of plants sampled: 12
Collector(s): - Campos, Alvaro, Universidad National Autonoma de Mexico
- Fuentes-Granados, Roger, Iowa State University
- Roath, William W., USDA, ARS
- Widrlechner, Mark P., USDA, ARS