06 October 1993.
Guanajuato, Mexico
Locality: Near Hda Las Mojas. Ca. 200 miles west of Guanajuato-Queretaro border, on highway from San Miguel de Allende to Queretaro.
Coordinates: 20.8500, -100.5167
(Map it)
Elevation: 2180m.
Environment description: Limestone outcropping. Assoc. vegetation: Ipomoea, Eupatorium, Tagetes, Cuphea aequipetala.
Number of plants sampled: 20
Comment: Small population.
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