12 September 1987.
Mexico
Locality: Collected midway between sites for DJUG 220 and 221 at Horsetail (Cabo de Caballo) Falls, 1/8-1/4 mile from parking lot, just below the falls on west side of the trail.
Comment: Collected by Dan Parfitt, L. J. Grauke, J. Payne, B. Wood, and Jose Luis Cervantes.
Collector(s):