28 December 1984.
Jalisco, Mexico
Locality: Just east of buildings forming Zarzamora (also called Estacion Biologica "Las Joyas"), 2 km east-southeast of Las Joyas, 7 km west-southwest of Rincon de Manantlan, and 11 km south-southeast of Ahuacapan, Sierra de Manantlan Occidental.
Coordinates: 19.5833, -104.2833
(Map it)
Elevation: 1950m.
Comment: Plants 15-25 dm tall in dense, many-stemmed (30-100 in each) colonies. Habitat is Thickets along stream in abandoned peach orchard..