12 September 1991.
Oaxaca, Mexico
Locality: 21.3 km ENE San Juan Bautista Cuicatlan toward Concepcion Papalo. Along level roadside area to above switch back.
Coordinates: 17.8500, -96.8500
(Map it)
Elevation: 2090m.
Environment description: Rocky clay loam. Along level roadside area to above switch back.
Comment: Large population.
Collector(s):