26 August 1978.
Oaxaca, Mexico
Locality: 3 km north of Miltepec and 32 km north of Huajuapan de Leon, on Highway 125 from Tehuacan, Puebla.
Elevation: 1850m.
Environment description: Moist clay soil on grassy east facing slopes.
Comment: Abundant at this locality and for several km southward.
Collector(s):