06 January 1979.
Jalisco, Mexico
Locality: Las Joyas, 7.8 km west by west-southwest of Rincon de Manantlan, about 16 km southwest of El Chante.
Coordinates: 19.6000, -104.2833
(Map it)
Elevation: 1900m.
Comment: Plants 1.5-2.5 meters tall, in dense, many stemmed (30-100) colonies. Thickets along stream and maize fields..