12 September 1987.
Mexico
Locality: Collected at Horsetail (Cabo de Caballo) Falls, about 1/8 mile from the parking lot just below the falls on the west side of the trail, east and downstream from the site for DJUG 220.
Elevation: 823m.
Comment: Collected by Dan Parfitt, L. J. Grauke, J. Payne, B. Wood, and Jose Luis Cervantes.
Collector(s):